The point in the compass needle has the opposite polarity from Earth’s north pole. The correct option is B.
What is a compass needle?The compass needle A magnetized pointer within a compass that can freely align with the Earth's magnetic field.
The magnetic needle is the most important part of the compass. It swings around the compass as you move, but the red end always points north and the white (or sometimes black) end always points south.
If you mean the geographical North Pole, the needle would point south because that is the only way to get there; more specifically, it would point south along the 112.4 degrees west longitude meridian towards the magnetic north pole at 82 degrees north, where compasses point.
Thus, the correct option is B.
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A force of 540 N is exerted on a 8 kg mass through 11 m. How much work was done?
• 4320 J
• 5940
• 742.5 J
• 47520 J
HELP PLEASE
The paths of the alpha particles depend on the forces on them in the metal.
Describe the model of the atom which is used to explain the paths of alpha particles aimed at thin sheets of metal foil.
Answer:
During the experiment, alpha particles bombarded a thin piece of gold foil. The alpha particles were expected to pass easily through the gold foil. ... The discovery of the nucleus was a result of Rutherford's observation that a small percentage of the positively charged particles bombarding the metal's surface...
Explanation:
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Rutherford's model of atoms describes the atom as a tiny, dense particle which contains a positively charged nucleus with electrons which are negative charged moving in orbitals.
What is Rutherford's model?Rutherford's model of atoms described the atom as a tiny, dense, positively charged core particle which is called a nucleus, in which nearly all the mass of the atom is concentrated, around within the nucleus which the light, negative constituents, called electrons, circulate at some specific distance, much like the planets which are revolving around the Sun.
During the Rutherford's experiment, the alpha particles are bombarded on the thin piece of gold foil. The alpha particles were expected to pass easily through this gold foil. The discovery of the nucleus of atom was a result of the Rutherford's observation in which a small percentage of the positively charged particles that is protons bombarding on the metal's surface.
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Help
Why do you think that if you drop two balls, exactly two balls rise on the other side at a
similar speed?
Answer:
It conserves both energy and momentum in the collision at the same time. By design, when the balls collide the strings that hold them up are vertical (assuming balls are only swung from one side).
Explanation:
Hope This Helps!!
. Calculate the weight of a 7 kg object.
Answer:
68.6N
Explanation:
Given parameters:
Mass of object = 7kg
Unknown:
Weight = ?
Solution:
The weight is the downward force of gravity on a body;
Weight = mass x acceleration due to gravity
Weight = 7 x 9.8 = 68.6N
A ball with a mass of 5 kg is accelerating at 5 m/s/s. What is the force acting on the ball?
9. A 12 v battery is connected to four 5 ohm light bulbs. What is the equivalent
resistance for the bulbs in series? In parallel?
10. What would be the current through each light of problem 9?
For parallel circuit?
For series circuit?
-no bs answers
Amy has a mass of 50 kg, and she is riding a skateboard traveling 10 m/s. What is her momentum?
Objects in free fall near the surface of the Earth experience acceleration of?
a) 8.9 m/s
b) 9.8 m/s
c) 9.8 m/s/s
d) 8.9 m/s/s
A 3kg ball has an initial velocity of 6m/s. How much energy will be transformed into Gravitational
Energy?
What is the relationship between distance and sound wave return time?
A 0.20 kg baseball is traveling at 40 m/s toward the batter. The ball is hit by the bat with a force of 200N, and is
now headed toward the pitcher at 25 m/s. How long was the bat in contact with the ball?
Answer:
Time, t = 0.015 seconds.
Explanation:
Given the following data;
Mass, m = 0.2kg
Force, F = 200N
Initial velocity, u = 40m/s
Final velocity, v = 25m/s
To find the time;
Ft = m(v - u)
Time, t = m(v - u)/f
Substituting into the equation, we have;
Time, t = 0.2(25 - 40)/200
Time, t = 0.2(-15)/200
Time, t = 3/200
Time, t = 0.015 seconds.
Note: We ignored the negative sign because time can't be negative.
Ep = mxgx h. Re-arrange to give an equation for:
a) The mass m.
b) The gravitational field strength g.
c) The height h.
Answer:
Ep=mxgxh.
a) m=ep/gxh
b) g=ep/m/h
c)h=ep/mxg
Answer:
Ep=mgh
Ep/gh=mgh/gh
Ep/gh=m
what are food sorces of iron
Answer:
liver (but avoid this during pregnancy)
red meat.
beans, such as red kidney beans, edamame beans and chickpeas.
nuts.
dried fruit – such as dried apricots.
fortified breakfast cereals.
soy bean flour.
Explanation:
How much is the pressure exerted at a point where a ball- pointed pen of area 1mm 2 is pushed against the paper with a force of 24 N
Answer:
Please find the attached pdf
Explanation:
A student is using graphs to model the relationship between frequency and wavelength in light waves produced by a source that is changing color over time. The student had completed the graph for frequency shown below. Which graph should the student use for wavelength change during this same period?
10. If a wave has a frequency of 12 Hz and a wavelength of 3 meters,
what is its wave speed?
Answer: 36 m/s
Explanation:
Wave speed = Wavelength * Frequency
12 * 3 = 36 m/s
Answer: 36 m/s
Explanation:
A photovoltaic cell produces electricity when the sun shines. What energy conversion is going here?
Answer:
light potential energy is converted into electrical potential energy.
Explanation:
A solar heat absorbs the light that creates pairs of electron - holes, these free charges when moving create a current, the light energy stored in the radiation is converted into electrical energy within the n-p junctions.
In summary, light potential energy is converted into electrical potential energy.
What does AS>0 mean?|
I
Answer:
Significant Other
Explanation:
that comes to mind when I see that
How does information travel during transcription?
a) RNA to amino acid
b) DNA to amino acid
c) DNA to RNA
d) RNA to DNA
How could the speed of a car be determined?
Answer:
try the formula v=s/t
v= velocity
s= speed
t=time
Explanation:
A rocket has a mass of 80,000 kg and accelerates at a rate of 35 m/s2. Calculate the force that provides this acceleration,
Explanation:
Given
Mass(M) = 80,000 kg
Acceleration (a) = 35 m/s²
Force (F) = ?
We know we have the formula
F = m * a
= 80000 * 35
= 2800000
= 2.8 * 10 ^ 6 N
The force is 2.8 * 10 ^ 6 N.
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If a rocket has a mass of 80,000 kg and accelerates at a rate of 35 m/s2. then the force that provides this acceleration would be 2800000 Newtons.
What is Newton's second law?Newton's Second Law states that The resultant force acting on an object is proportional to the rate of change of momentum.
The mathematical expression for Newton's second law is as follows,
F = m*a
As given in the problem we have to find the force that provides the acceleration of 35 meters / second², if the rocket has a mass of 80,000 kg,
The force acting on the rocket = 80,000 × 35
= 2800000 Newtons
Thus, the force acting on the rocket would be 2800000 Newtons.
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Which of the boxes on the electromagnetic spectra shown below contains all
the frequencies within the visible range?
Answer:
C.
Explanation:
C. has the box on the colors, which is the rainbow because it is the visible light we are able to see.
Answer:C
Explanation:
help plss .. Two bicyclists are accelerating forward in a straight line, and Biker 1 has less
mass than Biker 2. If the net force on the bikers is the same, which statement
describes their acceleration?
Explanation:
Remember Newton's Second Law.
[tex]F=ma[/tex]
If the force acting on both bikers is the same, we can look at the relationship between acceleration and mass.
If Biker 1 has a mass of 10kg and Biker 2 has a mass of 20kg, and both are being acted upon by a force of 100 N, let's see what that looks like. [tex]100 = 10*a_1 \rightarrow a_1 = 100/10 = 10[/tex]
[tex]100 = 20 *a_2 \rightarrow a_2 = 100/20 = 5[/tex]
So, given the same force, an object with GREATER mass will have less acceleration.
in what way is Speed related to Kinetic Energy?
Answer:
It turns out that an object's kinetic energy increases as the square of its speed
Explanation:
A car moving 40 mph has four times as much kinetic energy as one moving 20 mph, while at 60 mph a car carries nine times as much kinetic energy as at 20 mph.
basiclly the faster the more impact it has when it suddenly stops or hit somthing
The section of the lever to the right of the fulcrum could be described as the?
Answer:
Input Force
Explanation:
Answer:
resistance distance.
Explanation:
A circuit with a 10 V battery and two 3 resistors in series. what is the current through the circuit.
Answer:
please use the formula to find the current/use ohms law
Explanation:
I=v/r
When electricity moves through a metal wire, the wire is
A. A resistor
B. A conductor
C. an insulator
D. a power supply
When electricity moves through a metal wire, the wire is option B. A conductor.
What is a Conductor?Conductors are materials that allow electricity to flow easily through them. An electric current flows when electrons move through a conductor, such as a metal wire. The moving electrons can collide with the ions in the metal. This makes it more difficult for the current to flow and causes resistance.The flow of electricity through a wire is the flow of electrons. An electron is a negatively charged subatomic particle. In electrical conductors, the flow of electricity results from the movement of electrons from one atom to the next.To learn more about conductors, refer to: https://brainly.com/question/27533161
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The law of universal gravitation offers a mathematical explanation for the attraction between the moon and Earth.
Answer:
True.
Explanation:
The given statement is true that the law of universal gravitation offers a mathematical explanation for the attraction between the moon and Earth.
According to this law, the forces between two masses can be calculated by the product of their masses and divided by the square of the distance between them. Mathematically, it can be written as :
[tex]F=\dfrac{Gm_1m_2}{r^2}[/tex]
G is universal gravitational constant
Hence, the given statement is true.
PLEASE PLEASE
HELP!!!!!!!!
Answer:
b 8W
Explanation:
i dont know u find out
Answer:
B. 8 I believe that this is the answer
A 136 kg defensive lineman is about to tackle a 100 kg quarterback. Right before
impact, the lineman is moving north at 6.0 m/s and the quarterback is moving
north at 1.0 m/s. Determine the speed and direction of the two players
immediately after the tackle.
Answer:
3.88 m/s North
Explanation:
We are given that
[tex]m_1=136kg[/tex]
[tex]m_2=100 kg[/tex]
[tex]v_1=6 m/s[/tex]
[tex]v_2=1m/s[/tex]
We have to find the speed and direction of the two players
immediately after the tackle.
Using linear conservation of momentum
[tex]m_1v_1+m_2v_2=(m_1+m_2)v[/tex]
Substitute the values
[tex]136\times 6+100\times 1=(136+100)v[/tex]
[tex]916=236v[/tex]
[tex]v=\frac{916}{236}[/tex]
[tex]v=3.88m/s[/tex]
Direction of the two players immediately after the tackle is North.