Answers
Answer:
a. T₂ = 60 N
b. W = 25.98 N
Explanation:
a.
Taking right side as positive x direction, the equation for sum of forces in x-direction can be written as follows:
[tex]T_{2}Sin\ 30^o - T_{1} = 0\\T_{2}Sin\ 30^o = T_{1}\\T_{1} = (T_{2})(Sin\ 30^o)\\where,\\T_{2} = 30\ N\\Therefore,\\T_{1} = (30\ N)(Sin\ 30^o)\\[/tex]
T₁ = 15 N
b.
Taking upward direction as positive y direction, the equation for sum of forces in y-direction can be written as follows:
[tex]T_{2}Cos\ 30^o - W = 0\\T_{2}Cos\ 30^o = W\\W = (30\ N)Cos\ 30^o\\[/tex]
W = 25.98 N
Related Questions
Acceleration is measured in what
Answers
Answer:
meters per second squared
m/s^2
Explanation:
Hope this helps! :3
plz mark as brainliest!
Answer:
Acceleration is measured in m/s2 (meters per second squared)
Explanation:
A person with body resistance between his hands of accidentally grasps the terminals of a 14-kV power supply. (a) If the internal resistance of the power supply is what is the current through the person’s body? (b) What is the power dissipated in his body? (c) If the power supply is to be made safe by increasing its internal resistance, what should the internal resistance be for the maximum current in the above situation to be 1.00 mA or less?
Answers
A person who unintentionally grabs the terminals of a 14-kV power supply while holding body resistance between his palms.
(A) What is the current flowing through the person's body if the power supply's internal resistance is?
(b) Where does his body's power go when it is dispersed?
(c) If the power supply's internal resistance is to be increased in order to make it safer, what internal resistance should it have for the maximum current in the aforementioned scenario to be 1.00 mA or less?
employing ohm's law
a) The equation V = IR, where V is the voltage in volts, I is the current in amperes, and R is the resistance in ohms
R = V / I = 1.50 V/ ( 2.05 /1000) A = 731.71 ohms
b) E = IR + Ir = (731.71 0.0036) Power = IV = v = = = 0.1107 W
Ohm's regulation states that the cutting-edge through a conductor between two factors is without delay proportional to the voltage across the two factors. Introducing the steady of proportionality, the resistance, one arrives at the usual mathematical equation that describes this relationship:
The regulation became named after the German physicist Georg Ohm, who, in a treatise posted in 1827, described measurements of applied voltage and current thru easy electrical circuits containing various lengths of wire.
To learn more about ohm's law visit : https://brainly.com/question/15233790
#SPJ9
The frame of reference for an outside observer of a moving
bus might be a house across the street.
-TRUE
-FALSE
Answers
Answer:
false
Explanation:
A solid block of volume 6.0m^3 is placed under water whose density is 1000 kgm^3 (g=10Nkg^1)
a) what volume of water does the block displace?
b) What mass of water does the block displace?
c) what is the weight of the displaced Water?
d) How large is the upthrust which acts on the block ?
e) What will happen if the block is made ofwood of density 700kgm^3?
f) What will happen if the block is made of rock of density 3000kgm^3?
Answers
an electric dipole is located at the origin consists of two equal and opposite charges located at <-0.01, 0, 0>m and <0.01, 0 ,0 >m. the electric field at <0,1,0>m has a magnitude of 1 n/c. what is the approximate magnitude of the electric field at <0,2,0>m
Answers
The approximate magnitude of the electric field at <0,2,0>m is 0.
What is magnitude?Size alludes to the reviewing of the splendor of stars, the first being the most splendid. It has been moved to different issues since essentially the seventeenth hundred years. A size is the estimation or outright worth of an amount. A size is addressed by a positive genuine number. In Physics, greatness is characterized as the most extreme degree of size and the course of an article. Greatness is utilized as a typical calculate vector and scalar amounts. By definition, we realize that scalar amounts are those amounts that have size as it were.
Learn more about magnitude, refer:
https://brainly.com/question/17157624
#SPJ4
A can of corn heas a diameter of 6.6 centimeters and a height of 9.9 centimeters. How much corn can tue can hold?
Answers
Answer:
338.7cm
Explanation:
The can of corn would be in the shape of a cylinder. Since we are looking at capacity, we will want to find the volume.
V=abase×h
V=πr2×h
V=π(d2)2×h
V=π(6.62)2×9.9
V=338.7cm3
Hopefully this helps!
Answer:
338.7 cm³
Explanation:
For this question you use the volume formula of a cylinder πr²h.
Radius is 1/2 the diameter.
Simply input the variables into the formula.
π(3.3)²×9.9 = 107.811π or approximately 338.7 cm³
Cumulative Exam
Cumulative Exam Review
Active
2
Which best compares concave and plane mirrors?
Plane mirrors produce only virtual images, and concave mirr
Plane mirrors produce only real images, and concave mirror
Concave mirrors produce only real images, and convex mirro
Answers
Answer:
Explanation:
Hi! It would be A. Plane mirrors produce only virtual images,and concave mirrors produce real and virtual images.
Plane mirrors construct only virtual images, and concave mirrors make real and virtual images. Thus, this statement best corresponds concave and plane mirrors.
What are virtual images?A virtual image exists represented as the opposite of a real image, thus an image that cannot be obtained on a screen stands produced as a virtual image. The motivation for this exists in the fact that the beams of light that form a virtual image never connect therefore a virtual picture can never be projected onto a screen. Examples: Image formed in a plane mirror, an image constructed on the front and back surfaces of a spoon, etc.
Therefore, the (A) option exists as the accurate answer.
To learn more about the virtual image, refer here :
https://brainly.com/question/9861899
#SPJ2
A company claims to have built a perpetual motion device, which stays in motion without any energy input. Which statement best
summarizes the company's claim.
Answers
Answer:
It's Compleatly False
Explanation:
It would violate the first law of thermodynamics which states that energy cannot be created or destroyed, and these laws are not optional. Furthermore, A perpetual motion machine would have to produce work without energy input. The Second Law of Thermodynamics states that that an isolated system will move toward a state of disorder.
how elements are arranged in the groups of periodic table
Answers
Explain how skeletal muscles work in pairs.
plzzzz answer asap !!
Answers
Answer:
it holds the bone and helps to move
I don't know if this is right
Neha and Suhani are playing with two identical pendulums. They leave the bob from a certain position and wait for it to return to the same point. The one who waits for a shorter time wins. Neha leaves her pendulum from point L and Suhani leaves her pendulum from point P (see figure). What happens?
a. Neha wins as her bob comes back faster.
b. Suhani wins as her bob comes back faster.
c. No one wins as the bobs come back at the same time.
d. We cannot say any of the above for sure.
Answers
the nehah wins as her bob comes back faster,
The one who waits for a shorter time wins. Neha leaves her pendulum from point L and Suhani leaves her pendulum from point P.Neha wins as her bob comes back faster. Therefore, option A is correct.
What is pendulum ?A weight suspended from a pivot such that it can freely swing is called a pendulum. Gravity's restoring force will cause a pendulum to accelerate back toward its equilibrium position if it is sideways moved from its resting, equilibrium position.
An object that is suspended from a fixed location by a string or rod and can move freely due to gravity and momentum. frequently used to control electronics like clocks. Simple pendulum: A back-and-forth swinging pendulum. A circularly swinging pendulum is referred to as a spherical pendulum.
The force of gravity acting on the swing causes it to move freely back and forth after being raised and released. The swing keeps returning.
Thus, option A is correct.
To learn more about pendulum, follow the link;
https://brainly.com/question/14759840
#SPJ2
The accompanying table shows measurements of the Hall voltage and corresponding magnetic field for a probe used to measure magnetic fields. (a) Plot these data and deduce a relationship between the two variables.
Answers
The value of [tex]V_{H}[/tex] is[tex](1.00\times10^{-4} V/T)B[/tex].
What is a magnetic field?
The magnetic influence on moving electric charges, electric currents, and magnetic materials is described by a magnetic field, which is a vector field. A force perpendicular to the magnetic field and its own velocity acts on a moving charge in a magnetic field. The magnetic field of a permanent magnet pulls on ferromagnetic substances like iron and attracts or repels other magnets. A magnetic field that varies with location will also exert a force on a variety of non-magnetic materials by changing the velocity of those particles' outer electrons. Electric currents, like those utilized in electromagnets, and electric fields that change in time produce magnetic fields that surround magnetized things. Since a magnetic field's position can affect both its strength and its direction.
By using the trend line option in excel, we get
[tex]\Delta V_{H} (in\mu V) = 100B[/tex]
[tex]\Delta V_{H} (V)= (\frac{100} {10^{-6} } V/T)B[/tex]
=[tex](1.00\times10^{-4} V/T)B[/tex]
To learn more about the magnetic field, visit:
https://brainly.com/question/24761394
#SPJ4
Conclusion When there is a constant unbalanced force applied in the same direction as the motion, speed will ___________________ and acceleration will _____________________________. When there is an increasing unbalanced force applied in the same direction as the motion, speed will ___________________ and acceleration will ________________________. When there is a constant unbalanced force applied in the opposite direction as the motion, speed will ___________________ and acceleration will ________________________. When there is an increasing unbalanced force applied in the opposite direction as the motion, speed will ___________________ and acceleration will ________________________.
Answers
Explanation:
When there is a constant unbalanced force applied in the same direction as the motion, speed will increase and acceleration will remain constant. When there is an increasing unbalanced force applied in the same direction as the motion, speed will increase and acceleration will increase.
According to newton's 2nd law
F = ma
F ∝ a
meaning when F increases , a increases and vice versa
The tensile stress in a thick copper bar is 99.5 % of its elastic breaking point of 13.0× 10¹⁰ N/m² . If a 500-Hz sound wave is transmitted through the material, (c) What is the sound intensity in the bar?
Answers
Here the sound intensity in the bar is 4.73×10⁹ W/m².
What do you mean by sound intensity?The power carried by sound waves per unit area in a direction perpendicular to that region is known as sound intensity or acoustic intensity. The watt per square meter (W/m²) is the SI unit of intensity, which also covers sound intensity. One use for this technology is to measure the amount of sound energy present in the air near a listener.
According to the question:
The sound intensity in the bar, I = 1/2 ρω²s²v
I = 1/2 (8.92×10³)(2π×500)²(4.63×10⁻³)²(5010)
I = 4.73×10⁹ W/m².
Hence, the sound intensity in the bar is 4.73×10⁹ W/m².
To know more about sound intensity, visit:
https://brainly.com/question/15089336
#SPJ4
A hiker is traveling through the woods. He first travels east 125 m and then turns and travels 36 m north . What his his resultant displacement. Make sure you include magnitude , direction , and angle.
Answers
Answer:
can you put it in a sentence
The energy transferred between objects in contact as of temperature difference is called what?
Answers
Answer:
Heat
Explanation:
Answer:
Heat conduction, also called diffusion, is the direct microscopic exchange of kinetic energy of particles through the boundary between two systems.
Explanation:
Switch on your light source. Make sure it is shining onto a wall. Hold your largest plastic shopping bag square between the light source and the wall. What do you observe?
Answers
Since the plastic is not very thick, light rays can penetrate through when I hold my largest cardboard square between the light source and the wall. As a result, the cardboard tends to cast a shadow.
Based on the precise materials and light sources that were employed, the results of the cardboard experiment frequently differ.
Keep in mind that it is generally expected that reflective materials, such aluminum foil and mirrors, would reflect the specified or given light.
Since the plastic is not very thick, light rays do penetrate when I hold my largest cardboard square between the light source and the wall. As a result, the cardboard tends to cast a shadow when held in this position.
To learn more about light:
https://brainly.com/question/15200315
#SPj4
Below is a list of organisms and their tolerance to pollution. Which organism(s) would you expect to be remaining after the stream they lived in was polluted with man-made waste? Select all that apply.
Answers
Answer:
Black Flies, leeches and aquatic worms.
Explanation:
Black Flies, leeches and aquatic worms are the organisms that are tolerant to pollution and has the ability to survive in the polluted environment occur due to man-made waste. these organisms sometimes takes food from these pollutants and help in surviving these organisms. Without these tolerant organisms, those organisms which are not sensitive to these pollutants will die and removed from that polluted environment.
Please help me will mark u brainiest
Answers
Answer:
Answer: B. 12 N
Explanation:
Static Equilibrium
Static equilibrium occurs when an object is at rest, i.e., neither rotating nor translating.
In the static rotational equilibrium, the total torque is zero with respect to any rotational axis.
The torque applied by a force F perpendicular to a displacement X with respect to a reference rotating point is:
T = F*X
Considering the pivot as the rotating point, there are 3 forces producing torque. Let's consider counterclockwise torques as positive, thus:
30N * 40 cm - 60 N * 30 cm + F (30 cm + 20 cm) = 0
Operating:
1200 N.cm - 1800 N.cm + F(50 cm) = 0
- 600 N.cm + F(50 cm) = 0
Solving for F:
F = 600/50
F = 12 N
Answer: B. 12 N
describe Newton's law of gravitation and its application?
Answers
Answer:
Newton's law of gravitation states that every object in this universe attracts every other object with a force called gravity,
when the distance between the two object is increased the gravitational force decreases by its square,
and when the mass an object increases the gravitational force also increases,
therefore, gravitational force is directly proportional to the mass of the two objects and is square inversely proportional to distance between them.
Hope it helped u,
pls mark as the brainliest and put thanks
^_^
Which genus of single-celled organisms feeds by surrounding its food with cytoplasm and engulfing it?
A.Euglena
B.Volvox
C.Amoeba
D.Paramecium
Answers
Answer:b
Explanation:
b
what is the mass of a vehicle that has 50,000 N and 25M/S/S
Answers
Answer:
F = 1250000 N
Explanation:
If you have 50,000 S, by 25 M. It would be calculated to 1,250,000 N.
help me
1. A girl drops her new I-phone in the parking garage at First Colony Mall off a 22m ledge.
How fast is her phone moving just before racking into pieces?
2. An AHS football player throws a soccer ball straight up at 4m/s. How long does it take
for it to come back to their hand?
3. Batman throws a Batarang 31 m/s into the air. How high does it go?
4. A rock falls off a cliff for 0.004 hours, how high was the cliff?
5. An object is thrown into the air going 11 m/s. How fast is it going 2 seconds later?
Answers
1. The phone is moving with a velocity of 20.77 m/s before racking into pieces
2. The time taken for the ball to come back to their hand is 0.82 s
3. The maximum height reached by the batarang is 49.03 m
4. The cliff is 1016.06 m high
5. The object is moving with a velocity of –8.6 m/s after 2 s
1. How to determine the velocityInitial velocity (u) = 0 m/sAcceleration due to gravity (g) = 9.8 m/s²Maximum height (h) = 22 mFinal velocity (v) = ?v² = u² + 2gh
v² = 0² + (2 × 9.8 × 22)
v² = 431.2
Take the square root of both side
v = √431.2
v = 20.77 m/s
2. How to determine the time taken for the ball to come backWe'll begin obtaining the time taken to reach the maximum height. This is illustrated below:
Initial velocity (u) = 4 m/sFinal velocity (v) = 0 m/s (at maximum height) Acceleration due to gravity (g) = 9.8 m/s²Time to reach maximum height (t) =?v = u – gt (since the ball is going against gravity)
0 = 4 – (9.8 × t)
0 = 4 – 9.8t
Collect like terms
0 – 4 = –9.8t
–4 = –9.8t
Divide both side by –9.8
t = –4 / –9.8
t = 0.41 s
Finally, we shall determine the time for the entire trip
Time to reach maximum height (t) = 0.41 sTime for the entire trip (T) =?T = 2t
T = 2 × 0.41
T = 0.82 s
3. How to determine the maximum height Initial velocity (u) = 31 m/sFinal velocity (v) = 0 m/s (at maximum height) Acceleration due to gravity (g) = 9.8 m/s²Maximum height (h) =?v² = u² – 2gh (since the ball is going against gravity)
0² = 31² – (2 × 9.8 × h)
0 = 961 – 19.6h
Collect like terms
0 – 961 = –19.6h
–961 = –19.6h
Divide both side by –19.6
h = –961 / –19.6
h = 49.03 m
4. How to determine the height of the cliffAcceleration due to gravity (g) = 9.8 m/s²Time (t) = 0.004 h = 0.004 × 60 × 60 = 14.4 s Height (h) =?h = ½gt²
h = ½ × 9.8 × 14.4²
h = 4.9 × 207.36
h = 1016.06 m
5. How to determine the velocityInitial velocity (u) = 11 m/sAcceleration due to gravity (g) = 9.8 m/s²Time (t) = 2 sFinal velocity (v) = ?v = u – gt (since the ball is going against gravity)
v = 11 – (9.8 × 2)
v = 11 – 19.6
v = –8.6 m/s
Learn more about motion under gravity:
https://brainly.com/question/20385439
#SPJ1
A rocket is in a roughly circular orbit near the surface of the earth, moving at around 5 miles per second. Suppose that it is desired to lower it to a new circular orbit, sliightly closer to the surface. The rocket flips over and fires its main rocket engine in a short burst to slow its speed to 4. 96 miles per second. What must it do next?.
Answers
The rocket slows its speed again a little when the distance from the earth stops decreasing.
While the rocket is in a roughly circular orbit near the surface of the earth and is moving at around 5 miles per second. To decrease it to a new circular orbit, slightly near to the surface. The rocket reverse and shoots its main rocket engine in a short burst to decrease its speed to 4. 96 miles per second. The response of the rocket is based on escape velocity which is referred to as the minimum speed required to reach an infinite distance for a free object to escape from the gravitational influence of an immediate body.
To know more about the escape velocity of a rocket refers to the link https://brainly.com/question/10979668?referrer=searchResults.
#SPJ4
Carlo and Sara push on a desk in the same direction. Carlo
pushes with a force of 50 N, and Sara pushes with a force of
40 N. What is the total resultant force acting on the desk?
Whats the answer to this question?
Answers
Answer:
90N
Explanation:
The total resultant force acting on the desk being pushed by Sara and Carlo is 90N
A resultant force is a singular force that will act the same effect as the forces acting on a body.
When two or more forces acts on a body in the same direction, their resultant is the sum of the individual forces. If it is in the opposite direction, the differences is the resultant force. The body will move in the direction of the applied force with a higher magnitudeSo;
Resultant force = Force applied by Sara + Force applied by Carlo
Resultant force = 50N + 40N = 90N
Question 4 (1 point)
Select all of the BENEFITS of a SERIES circuit.
It uses more wire than a parallel circuit.
It is simple and cost effective to build.
The bulbs will stay on when one bulb breaks or burns out.
You will always know when there is a break in the circuit.
Answers
Answer:
D and C
Explanation:
C. The bulbs will stay on when one bulb breaks or burns out.
D. You will always know when there is a break in the circuit.
BENEFITS of a SERIES circuit:
Easy to design and build the circuit. If a component breaks, the current flow stops. It acts as a current regulator. The cost to build a Series Circuit is less compared to Parallel Circuit.Cells are connected in series give a greater resultant voltage than individual cells. Voltage increases if the number of cells increases. Series circuits do not overheat easily.The bulbs will stay on when one bulb breaks or burns out. You will always know when there is a break in the circuit.Therefore, option C and D are correct.
Learn more:
brainly.com/question/11798838
Ninety percent of research animals are __________. a. dogs b. rats and mice c. primates d. rabbits please select the best answer from the choices provided a b c d
Answers
Answer: rats and mice
Explanation: because they are small and easy and more ethical
Answer:
B. Rats and mice
Explanation:
They use rodents more as a test subject, so the answer would be B. Rats and Mice.
I hope it helps! Have a great day!
Which forms of heat transfer do not require matter(particles) to happen? (Select all that apply)
Conduction
Convection
Radiation
None of these
Answers
Answer:
Radiation
Explanation:
bc Radiation transfers heat through electromagnetic waves.
pls solve this numerical.
Answers
Answer:
[tex]{ \rm{A .B = |A| |B| \sin( \theta) }} \\ { \rm{A.B = 5 \times 7 \times \sin(45) }} \\ { \rm{A.B = 35 \times \frac{1}{ \sqrt{2} } }} \\ \\ { \rm{A.B = \frac{35}{ \sqrt{2} } }}[/tex]
rationalise the denominator;
[tex]{ \rm{A.B = \frac{35}{ \sqrt{2} } \times \frac{ \sqrt{2} }{ \sqrt{2} } }} \\ \\ { \rm{A.B = \frac{35 \sqrt{2} }{2} }}[/tex]
A car starts from rest and accelerates to a speed of 30 m/s in 20 seconds, what is its acceleration
Answers
The acceleration of a car that starts from rest and accelerates to a speed of 30 m/s in 20 seconds is 1.5 m/s².
What is the acceleration of the car?Acceleration is defined as the change in velocity of a body or an object with time.
Mathematically;
Acceleration = change in velocity/time takenThe acceleration of the car is calculated using the equation of motion as follows:
v = u + a * t
where;
v is the final velocity
u is the initial velocity
t is the time taken
a is the acceleration
From the dat provided: v = 30 m/s, t = 20 s, u = O m/s
a = v - u/t
a = 30 - 0/20
a = 1.5 m/s²
Therefore, the acceleration of the car that starts from rest and accelerates to a speed of 30 m/s in 20 seconds, is 1.5 m/s².
Learn more about acceleration at: https://brainly.com/question/605631
#SPJ1