What potential difference is needed to accelerate a he + ion (charge + e, mass 4u) from rest to a speed of 1.8*106 m/s?

Two cars are 300 km apart. At noon, one car heads north at a rate of 50 km/hr. Two hours later, the second car heads south at a rate of 60 km/hr. How fast is the distance between the cars changing at 5 PM?

What is the kinetic energy of a 3-kg ball that is rolling at 2 meters per second?

Pedro is planning to model how changes in weather affect evaporation from lakes. For his first experiment, he wants to test how humidity affects the evaporation rate.

Complete the passage to summanze factors affecting the speed of a wave The matenal or substance that a wave moves through is called a The medium affects the speed of the wave that passes through it one factor that affects the speed of a wave is the

You catch a volleyball (mass 0.270 kg) that is moving downward at 7.50 m/s. In stopping the ball, your hands and the volleyball descend together a distance of 0.150 m. How much work do your hands do on the volleyball in the process of stopping it?

The forklift exerts a 300.0 N force on the box and moves it 15.0 m into the air. How much work does the forklift do? A. 500 J B. 1.50 * 10^3 J C. 4.50 * 10^3 J D. 0.00 J

Why the room gets hot even we open the door of refrigerator?

What effect will taking a dose of antibiotics that is too small have on the bacteria you are trying to destroy? a. all of the bacteria will pass on their genes b. none of the bacteria will pass on their genes c.

Multiply 0.00032 cm by 4.02 cm and express the answer in scientific notation

Apply why does a box on the seat of a car slide around on the seat when the car speeds up slows down or turns a corner?