4 years ago

Which term describes the forces acting on the car? A. inertial B. buoyant C. balanced D. unbalanced

Physics

1 answer:

Anna35 [415]4 years ago

3 0

The answer is unbalanced because the forces actually act on each other.

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just want to double-check that you understand a practical consequence of the expansion of the universe. Light reaches us from a

Daniel [21]

Answer:

The distance of the light is 9.4608 x 10^25 m

Explanation:

Time taken by the light = 10 billion years = 10 x 10^9 years

speed of light = 3 x 10^8 m/s

speed of light in m/years is = (3 x 10^8)/(60 x 60 x 24 x 365) = 9.4608 x 10^15 m/year

distance = speed x time

therefore, the distance of this light = 10 x 10^9 x 9.461 x 10^15 = 9.4608 x 10^25 m

4 0

3 years ago

Which term describes the point when two objects reach the same temperature and there is no longer a transfer of energy through h

yaroslaw [1]

The term you need to know is equilibrium. Technically it means that heat gained = heat lost. Normally in beginning chemistry classes the evidence for this condition is a stable temperature.

5 0

3 years ago

Pulling a rubber band back and then letting it fly across the room is an example of

Cloud [144]

Answer:

Explanation:

because a elastic band uses elastic energy

7 0

3 years ago

Show that the speed with which a projectile leaves the ground is equal to its speed just before it strikes the ground at the end

Rina8888 [55]

Answer:

Thus, the velocity at the time of strike is same as the velocity at the time of projection.

Explanation:

Let a projectile is projected vertically upwards with a speed of u and reaches to the maximum height H.

At maximum height , the speed is zero and then the projective comes back on the ground.

Use the third equation of motion

$v^2 = u^2 + 2 g h \\\\0 = u^2 - 2 g H\\\\\u =\sqrt{2gH}$

Now let the velocity at the time of strike is v'.

Use third equation of motion, here initial velocity is zero.

$v'^2 = 0 + 2 g H \\\\v = \sqrt{2gH}$

Thus, the velocity at the time of strike is same as the velocity at the time of projection.

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3 years ago

an athlete at the Olympic Game run at constant speed and covers the 100 yard dash in 9.52seconds. what will be his time for 100

pickupchik [31]

Dr.phil can help you with that answer also the answer is 21.3

5 0

3 years ago