A weight lifter lifts 150 kg to a height of 2m in 10 seconds. What is the power used? Remember, the force of an objects weight = mass x gravity

A. 30W

B. 1,500W

C. 294 W

D. 330W

Suppose you have a hypothesis you believe to be correct what should you do to make you become a theory A. Write a letter to the noble prize committee B. Do the same experiment over and over again C.

A child throws a steel ball straight up. consider the motion of the ball after it has left the child's hand but before it touches the ground, and assume that forces exerted by the air are negligible.

The tendency for an object at rest to remain at rest

1. Read the section in your textbook "Sources from the Past Globalization. Answer the question at the end of the sectic is the process which nations become more econ each other. 3. How might have industrialization lead to global climate cha 4.

Lexy throws a dart with an initial velocity of 25m/a at an angle of 60 degrees relative to the ground. What is the approximate vertical component of the i ritual velocity?

How does work get affected when a object is lifted up instead of using a ramp

Choose the correct statement. a. Usually, when one form of energy is converted to another, no energy is wasted. b. The total amount of energy in the universe is gradually decreasing. c. This statement illustrates the first law of thermodynamics. d.

A 10 cm3 block of paraffin (a type of wax) weighs 0. 085 N. It is carefully submerged in a container of gasoline. One cm3 of gasoline weighs 0.0069 N. a. What is the weight of the gasoline displaced by the paraffin? b.

What is a device made by joining two different materials to form a circuit that produces an electric current? a. convertor b. resistor c. semiconductor d. thermocouple

An elevator weighing 15000 newtons s raised in 50 seconds. If the distance between stories is 3.0 meters how much power is required of the motor?