PHYSICS HIGH SCHOOL

A derived unit is a combination of fundamental units. Which of the following is an example of a derived unit?a) centimeter (used to measure distance)

b) gram (used to measure mass)

c) cubic centimeter (used to measure volume)

Answers

Answer 1
Answer:

Answer:

Option (c)

Explanation:

The combination of two or more fundamental units is called derived unit. For example, cubic metre, newton per metre, metre per second.

Thus, cubic centimetre is a derived unit.
Answer 2
Answer: C)Cubic centimeter is derived unit here;

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You take a running jump off the end of a diving platform at a speed of 7 m/s and splash into the water 1.5 seconds later.a.) How far horizontally do you land from your takeoff point?
b.) How high is the diving platform?

Answers

Part a

Just use v=d/t

d = vt
d = 7 x 1.5

For part b

Vf=Vi +at
Vf=0 + (9.8)(1.5)

d= ((Vi + Vf) /2) x t
d = ((0 + Vf) /2) x 1.5

In second equation, use Vf found in first equation

A 1.0 kg ball is thrown into the air with an initial velocity of 30 m/s. What is the kinetic energy of the ball?

Answers

Answer:

If this helps, to work out the kinetic energy the formula is K (stands for kinetic energy) = 1/2 (half of) mass and velocity. So the answer is 450 joules.

Explanation:

Race car drivers must slow down as they make turns on the track. This is best explained by the law of inertia. Which statement best describes inertia for the car going around a turn? A) A body in motion stays in motion at the same speed.
B) The speed of the car going into the turn must be conserved.
C) The speed around a turn is proportional to the radius of curvature of the turn.
D) A body in motion tends to continue in a straight line and requires a force to turn.

Answers

Answer:

D) A body in motion tends to continue in a straight line and requires a force to turn.

Explanation:

A body in motion tends to continue in a straight line and requires a force to turn. Also, If no force is applied the race cars will keep moving in a straight line at constant speed and this will definitely lead to an accident/breakdown.
It was D! I took a test on this and it was right.

Sound waves travel faster in: a. solids as compared to liquids. b. liquids as compared to gases. c. warm air as compared to cooler air. d. All of the above are correct.

Answers

Answer:

d all of the above are correct

A car travels at a consant speed of 18.0m/s for 10.8s.
Determine all unknowns.

Answers

1. Distance: The car traveled a distance of 194.4 meters.
2. Displacement: The displacement is also 194.4 meters.
3. Velocity: The velocity of the car is
18.0 m/S.
4. Acceleration: The acceleration is O

Coal _____. is a renewable resource can easily be replenished is formed from plant remains is the least-polluting energy source

Answers


Coal . . . . .

-- is a renewable resource that can easily be replenished.
   It happens by itself, and you don't even need to do anything,
   but it takes several million years.

-- Is formed from plant remains, and

-- is perhaps the MOST polluting energy source.

There is only supposed to be one answer choice, so the correct answer is is formed from plant remains.
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