A 380-N girl walks down a flight of stairs son that she is 2.5 m below her starting level. What is the change in the girl's gravitational potential energy?

A Ferris wheel is turning at a constant speed of 5 m/s is it accelerating true or false?

Which three statements about electromagnetic radiation are true? 1) Light is a kind of electromagnetic radiation. 2) Electromagnetic radiation can travel only short distances. 3) Electromagnetic radiation has no mass.

An EM wave has frequency 9.90*10^14 Hz. What is its wavelength? How would we classify it?

How much sweat (in ml) would you have to evaporate per hour to remove the same amount of heat a 90.0 w light bulb produces? (1w=1j/s.) ?

Which sequence of energy transformations occurs after a battery-operated flashlight is turned on? A) electrical → light → chemical B) electrical → chemical → light C) chemical → light → electrical D) chemical → electrical → light

Why does the closed top of a convertible bulge when the car is riding along a highway? Why does the closed top of a convertible bulge when the car is riding along a highway? The air pressure is greater outside the car than inside.

Is a white shirt cooler or warmer in the sunlight?

A stone is thrown vertically upward with a speed of 18.0. (a) How fast is it moving when it reaches a height of 11.0? (b) How long is required to reach this height? For part A) I did: y=11m, g=9.

What object or class of objects makes up most of the solar systemâs mass?

Carole is very tired and makes coffee. why would newton say that she must use her hand to put up the cup