Answer:
The velocity of the ball is 5 m/s to the left.
Explanation:
-25kg*m/s divided by 5 kg gives
speed of -5 m/s
The velocity of the ball is 5 m/s to the left.
energy is the ability to___or___ matter
Energy is defined in science as the ability to move matter or change matter in some other way.
3. You are flying 2586 miles from San Francisco to New York. An hour into the flight, you are 600
miles from
San Francisco. What is your speed in
m/s?
Answer:
268.22 m/s
Explanation:
An hour into the flight, you are 600 miles from San Francisco.
This sentence says that speed is 600 mi/h.
Now we need to convert it into m/s.
1 mi = 1609.34 m
1 h = 60 min = 60 min *60 s/1min = 3600 s
600 mi/h * 1609.34 m/1 mi * 1h/ 3600s= 600*1609.34/3600 m/s= =268.22 m/s
If you are flying 2586 miles from San Francisco to New York. An hour into the flight, you are 600 miles from San Francisco then your speed would have been 600 miles/hour.
What is speed?The total distance covered by any object per unit of time is known as speed. It depends only on the magnitude of the moving object.
As given in the problem, If you are flying 2586 miles from San Francisco to New York. An hour into the flight, you are 600 miles from San Francisco then we have to find your speed,
Total distance traveled from San Francisco to New York in one hor= 600 miles
speed of the flying plane = distance traveled in one hour time period
= 600 miles/hour
Thus, your speed would have been 600 miles/hour.
Learn more about speed from here,
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What two variables is acceleration dependent on? What is the relationship between these variables and acceleration? (i.E. If you increase one variable what happens to the acceleration?)
Answer:
1. Unbalanced Force (If you increase force, the acceleration will increase)
2. Mass of Body (If you increase mass, the acceleration will decrease)
Explanation:
According to Newton's Second Law the acceleration produced in a body depends upon two variables. The law states that:
“When an unbalanced force is applied on a body then an acceleration is produced in it, in its own direction”
The magnitude of produced acceleration is directly proportional to the applied force and inversely proportional to the mass of body. Mathematically,
a α F
and, a α 1/m
where,
a = acceleration
F = Unbalanced Force
m = Mass of Body
So, the acceleration increases when the unbalanced force increase and vice versa.
And the acceleration decreases when the mass of body increase and vice versa.
combining above equations:
a α F/m
a = (Constant)F/m
here,
Constant = 1
therefore,
F = ma
Fossil fuels
?
Water cycle
Hydropower
۔۔
Photosynthesis
Sun
2
Nuclear fusion
Plants
A.
Plant life decay
Answer:
nuclear fusion plants are fossil fuels, if you are asking which of the following is a fossil fuel
Explanation:
True or false. When populations do not exceed their environment carrying capacity biology communities are stable?
Answer:
True
Explanation:
1. A Force of 50N acts uniformly over and at night angles to a surface. When
the area of the surface is 5m2, then the pressure on the area is:
A. 250Pa
B. 10Pa
C. 45Pa
D. 55Pa
Answer:
The answer would be 10 pascal.
Answer:
B. 10Pa
Explanation:
A 45-gram object that has a volume of 9 mL has a density of
a. 5 g/mL
b. 54 g/mL
c. 36 g/mL
d. 405 g/mL
Answer:
The answer is a. 5g/mLExplanation:
Given data
mass m= 45g
volume v= 9mL
we know that density=m/v
substituting our given data we have
[tex]density=\frac{45}{9} =5g/mL[/tex]
What is Density?
The Density of a body can be defined as the ratio of mass to volume,
or
Density, mass of a unit volume of a material substance. The formula for density is [tex]Density= \frac{mass}{volume}[/tex],
where d is density,
M is mass, and
V is volume.
Density is commonly expressed in units of grams per cubic centimetre.
A 0.50 kilogram ball is held at a height of 20 meters. What is the kinetic energy of the ball when it reaches halfway after being released?
A.
49 joules
B.
98 joules
C.
1.0 × 102 joules
D.
1.1 × 102 joules
Answer:
A
Explanation:
Use the conservation of energy formula to calculate the velocity of the ball when it reaches the halfway point (10m down). Then, use your calculated value to obtain the kinetic energy.
Answer:
A. 49 on Plato
Explanation:
Its the right one trust me .
Two forces oppose each other while a star is stable. The first is gravity pulling inward. What is the
other force?
Answer:
the radiation pressure that has to push the star
Explanation:
In the stars there are two forces that act in the opposite direction.
- On the one hand there is the force of gravity that the star has to collapse
- On the other is the radiation pressure that has to push the star. This pressure comes from the radiation and velocity of the particles involved in nuclear reactions.
what is gyration length
Answer:
The gyration length or radius of gyration about an axis is the radial distance from a point which would have the same moment of inertia as the body's actual distribution of mass if the body's total mass were concentrated at a point.
Explanation:
The gyration length appears to be the distance from a point where the whole body appears to be concentrated when it rotates about the point.
The gyration length can be illustrated this way.
Suppose we have a distribution of masses m₁, m₂, m₃,..., mₙ located at points r₁, r₂, r₃,..., rₙ respectively from a point O. Their moment of inertia I about point O is
I = m₁r₁² + m₂r₂² + m₃r₃² + ... + mₙrₙ²
If M = total mass = m₁ + m₂ + m₃ + ... + mₙ
Now I = MR² where R = gyration length
MR² = m₁r₁² + m₂r₂² + m₃r₃² + ... + mₙrₙ²
R² = m₁r₁² + m₂r₂² + m₃r₃² + ... + mₙrₙ²/M
R = √[(m₁r₁² + m₂r₂² + m₃r₃² + ... + mₙrₙ²)/(m₁ + m₂ + m₃ + ... + mₙ)]
R = √(∑mr²/∑m)
If the particles have the same mass, m₁ = m₂ = m₃ = ... = mₙ and M = nm. Since m = M/n
R = √[(mr₁² + mr₂² + mr₃² + ... + mrₙ²)/(m + m + m + ... + m)]
R = √[m(r₁² + r₂² + r₃² + ... + rₙ²)/nm]
R = √[(r₁² + r₂² + r₃² + ... + rₙ²)/n]
R = √(∑r²/n)
So the gyration length is the square-root of the sum of individual moment of inertias of the constituent masses divided by the sum of masses or the root mean square of the distances of the particles.
Technological design leads to the development and innovation of new technologies.
Which statement represents innovation?
O Solar panels have increased in efficiency over the past 20 years.
O The Sun is the primary source of energy for the solar system
O Previous models of a type of car have fewer engine problems.
O Natural selection ensures that only the fittest survive.
Answer:
Solar panels have increased in efficiency over the past 20 years
Explanation:
Because if efficiency have increased other technologies will be discovered
Answer:
Solar panels have increased in efficiency over the past 20 years
Explanation:
The acceleration due to gravity on Pluto is less than that on the Earth. The mass of a person on Pluto will be
The exact same. gravity has no effect on mass.
Answer:
The acceleration due to gravity on Pluto is less than that on the Earth. The mass of a person on Pluto will be LessExplanation:
A ball is being rolled by a normal push of 1000N. it is opposed by friction which has a force of 0.3kN and air resistance which has a force of 23N. Calculate the resultant force.
Answer:
677 N
Explanation:
Let F = normal push force = 1000 N, f = frictional force = 0.3 kN = 300 N and f' = air resistance = 23 N.
Since the frictional force and the air resistance are in the opposite direction the the normal push force, the resultant force R is
R = F - f - f'
= 1000 N - 300 N - 23 N
= 677 N