A man performed 500 j of work moving a couch in his living room. It took him 10 seconds to move the couch. What was his power?

100w

5000w

490w

50w

A 20-N force applied to the handle of a door produces a 44-N output force. What is the AMA of the handle?

For which of the following problems would a scientist most likely use carbon-14? Question 17 options: to calculate the age of the Earth's oldest rocks to calculate the age of a piece of bone to identify the elements that make up a rock to identify

How many valance electron do atoms need to be stable

A constant force of 53 newtons was applied to a 12-kilogram mass for 15 seconds. a.) What was the change in momentum of the mass? b.) What was the change in velocity of the object?

A 0.26-kg rock is thrown vertically upward from the top of a cliff that is 32 m high. when it hits the ground at the base of the cliff, the rock has a speed of 30 m/s.

What happens when you put a galvanized zinc nail in copper solution for an hour? Does is rust or turn different color? What is the outcome? What happens after an hour in vinegar?

Psuedopod in a sentence

Study the scenario. As a spacecraft moves beyond Pluto, its thrusters are turned on for a short time to boost its speed to approximately 32,500 mi/h. The thrusters are then turned off.

What produces an electromagnetic wave? A) An oscillating or accelerating electric charge B) An electric charge moving at constant velocity C) A static electric charge D) A magnetic monopole moving at constant velocity

A physics book has a height of 25.8 cm, a width of 20.2 cm, and a thickness of 2.90 cm. (a) What is the density of the physics book if it weighs 20 N? kg/m³ (b) Find the pressure that the physics book exerts on a desktop when the book lies face up.