What simple machines would move or turn an object?

Question 3 options:

wheel and axle

lever

screw

wedge

4. A see-saw is an example of what type of lever?

Question 4 options:

First Class

Second Class

Third Class

Fourth Class

How much work does a weightlifter do when she moves a 100 kg weight 1.5 m?

Organism undergo constant chemical changes as they maintain an internal balance known as?

What must her minimum speed be just as she leaves the top of the cliff so that she will miss the ledge at the bottom, which is w = 1.75 m wide and h = 8.00 m below the top of the cliff?

n explosion breaks an object initially at rest into two pieces, one of which has 2.0 times the mass of the other. If 8400 J of kinetic energy were released in the explosion, how much kinetic energy did the heavier piece acquire

What is the weight of a 10-kilogram object on Earth? A. 10 N B. 98 N C. 100 N D. 980 N

A sound from a source has an intensity of 270 db when it is 1 m from the source. what is the intensity of the sound when it is 3 m from the source?

What experimental term is it when a ruler is dropped to the floor?

Where is most of the energy from incoming waves focused? A. spit B. headland C. underwater D. barrier beach

Exoplanets (planets outside our solar system) are an active area of modern research. Suppose you read an article stating that there is a newly discovered planetary system with three planets.

A car with a mass 1200 kg accelerates at 1.89 m/s2. What is the total force exerted by the car on the road (answer in N to two decimal places) ?