A weightlifter raises a 200-kg barbell with an acceleration of 3 m/s squared. how much force does the weightlifter use to raise the barbell

Explain why the impact of one heavy stone would produce waves with higher amplitude than the impact of the light stone would

Energy is always conserved. It cannot be created or destroyed. It can, however, be transferred between objects or systems, from one form to another.

A cross country skier can complete a 7.5 km race in 45 minutes. What is the skiers's average speed

Ken wishes to get produce from the store, which is a distance D = 2.5 km east of his condo. Ken rides his bike to the store at a constant speed of v1 = 6.1 m/s, and rides back to his condo at the slower speed of v2 = 2.4 m/s. 1.

Hink about the friction activity. Return to this activity to see it again if you need to. Explain what happened in each of the two demonstrations, and then compare them. Use the terms resistance, vacuum, gravity, velocity, and friction.

Approximately eleven million people are diagnosed with cancer each year. Thus, many countries, including the United States, spend millions of dollars annually on cancer research.

What is the distance from earth to sun in meters scientific notation?

You are learning about energy transformations in science class. Sally's group made this electromagnet using a battery and some wire. Describe the energy transformation you see here.

describe a potentially life threatening situation that could occur in the client who abruptly withdraws from long term use of cns stimulants

Based on the assumption that a liquid conducting core and rapid rotation are both required for a magnetic field to operate, which terrestrial planets would you expect to have magnetic fields?