PHYSICS HIGH SCHOOL

Which of the following describes volumeA.the number of particles or amount of matter
B.the amount of space that matter ocupies
C.how fast the particles are moving
D.amount of massin a certain place

Answers

Answer 1
Answer: B.the amount of space that matter ocupies
Answer 2
Answer: B.the amount of space that matter ocupies

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A car travelling at 32 m/s decelerates at a rate of 6 m/s ^ 2 over 4 secondsWhat is the final velocity the car

Answers

Answer:

v=8m/s

Explanation

The initial velocity, u, of the car=32m/s

Since the car has decelerated, we negate the acceleration

This implies that,

a=-6m{s}^( -2)

Time,t=4s

Let v be the final velocity,

using the relation,

a = (v - u)/(t)

We obtain the below by substitution

- 6= (v - 32)/(4)

By cross multiplying we obtain,

- 6 * 4 = v - 32

- 24=v-32

- 24+32=v

v=8m/s

1. What would be the final temperature of a mixture of 50g of water at 200C temperature and50g of water at 400C temperature?

Answers

It would be the average I guess..300c temperature.Heat flows from higher temp. to lower temp. till the temp. of both the liquids are same.

The force of gravity between two objects is directly proportional to which of the following? a. the masses of each object.
b. the velocity of each object.
c. the distance between the objects squared.
d. the mass of one object and the distance between the objects.

Answers

Force of gravity =Gxm1xm2 /r^2G= gravitational constantm1 and m2 are massesr is the distance between masses.So a is the correct option
The force of gravity between two objects is directly proportional to the
product of the two masses, and to the mass of each object individually.

a plane is traveling at a velocity of 50 m/s. it accelerates at a constant rate of 0.5 m/s until it's velocity reaches 65 m/s. what distance did the plane cover while it was accelerating?

Answers

Answer:

Displacement = 1725m

Explanation:

t = (u-v)/(a)

t = (65-50)/(0.5) = 30s

s = ut+(1)/(2)at^(2) \ns = 50*30 + (1)/(2) *0.5*30^(2) = 1725m

Final answer:

Using the equations of motion, we find that the plane covers a distance of 850 meters while it is accelerating from a velocity of 50 m/s to 65 m/s at the rate of 0.5 m/s².

Explanation:

You're asking about a motion problem in physics that requires using the equations of motion to solve. In this case, the formula we would use is v² = u² + 2as, where 'v' is the final velocity, 'u' is the initial velocity, 'a' is acceleration, and 's' is the distance covered.

Given:
Initial velocity (u) = 50 m/s
Final velocity (v) = 65 m/s
Acceleration (a) = 0.5 m/s²

We are asked to find the distance covered (s). Rearranging the formula to find 's', we get: s = (v² - u²) / 2a

Substituting the given values, the distance covered (s) = (65² - 50²) / (2*0.5) = 850 meters. So, the plane covers a distance of 850 meters while it is accelerating.

Learn more about Equations of Motion here:

brainly.com/question/35709307

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What is the kinetic engery of a baseball five feet above the ground when it has already fallen 32 feet

Answers

The answer is 25 ...

The two forces in each pair may have different physical origins (for instance, one of the forces could be due to gravity, and its pair force could be due to friction or electric charge). a) True
b) False

Answers

Answer:

b)False

Explanation:

This is the false statement .The two forces in each pair could not have different physical origins.

The two pair of forces have same origin.It can not be possible that one is electric force and other one is gravity force or friction force.

We know that magnitude of electric force is much smaller than the friction force .So they can not be in pair form.

Answer is b)  False
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