How fast must a 6 kg cat run to have kinetic energy of 150 j?

Answers

Answer 1

Answer: KE = 0.5mv^2
150 = 0.5*6*v^2
v^2 = 50
v = 7.1m/s

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How many miles can you get on one tank of gas if your tank holds 18 gallons and you get 22 miles per gallon?

Answers

Multiply the two. The units will cancel out. 22 miles per gallon can be expressed as 22 miles / 1 gallon, so you can write the following:
18 gallons * 22 miles / 1 gallon
Which simplifies to 18 * 22 miles = 396 miles.

Answer: 18*22=396

Explanation:

18*22=

(10*22) + (8*22)=

220+176=396

PLEASE HELP 25 POINTS!!!! Multiply the following numbers and round your answer to the correct number of significant figures: 72,000 x 45

Show both the unrounded and rounded answer.

Answers

Answer:

3,240,000

Explanation:

72,000 times 45= 3,240,000

There is no rounded number unless u are dividing.

Answer:3240000
There is no rounding (dividing)

Elle is playing with a ball in a bus that moves in a straight line with constant velocity. What can you say about the motion of the ball in the moving bus if Elle throws the ball vertically upwards?a the ball will fall back to her

b the ball will land ahead of her

c the ball will land behind her

d the ball will move to the right

Answers

Given that they are all on the same bus that is travelling in a straight line at the same velocity, when Elle throws the ball directly upwards, the ball will simply fall back to her. This is because the bus, Elle, and the ball are all travelling in the same direction and at the same speed. Among the choices, the correct answer is A.

Answer:

the ball will fall back to her

Explanation:

How does ice float on water?

Answers

a substance floats of it is less dense, or has less mass per liquid volume than other components than the mixture.

A light ray traveling in air enters a secondmedium and its speed slows to 1.71 × 10^8 meters
per second. What is the absolute index of
refraction of the second medium?
(1) 1.00 (3) 1.75
(2) 0.570 (4) 1.94

Answers

Light travels at 300,000,000 meters per second, in scientific notation 3 * 10^8 meters per second. Note that in the medium it travels at 1.71 * 10^8. Taking the ratio of these two numbers with the final speed over the initial speed, we get (1.71*10^8)/(3*10^8) = 1.71/3 = 0.57

Your answer is (2) 0.570

You are 15.0m from the source of a sound. At that distance, you hear it at a sound level of 20.0dB. How close must you move to the sound to increase the sound level to 60dB?I think its 45.0cm?

15.0cm
45.0cm
55.0cm
60.0cm
85.0cm

Answers

The answer is 45.0cm

Answer:

Explanation:

its 85 cm because it just is in meters it would be .8m which would be decent distance to hear it

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