Which type of energy is involved in the operation of simple machines? A. chemical energy B. electrical energy C. mechanical energy D. thermal energy

In attempting to pull a 1500 kg car out of a ditch, Al exerts a force of 200 N for 5 s, Bill exerts a force of 500 N for two s, and Clyde exerts a force of 300 N for four seconds. The car does not move at all. Who provided the greatest impulse?

It is generally seen that, when a substance absorbs heat energy, its heating curve shows two plateaus. Which phenomenon is indicated by these plateaus?

Briefly describe the characteristics of each soil horizon from the top layer to the bottom layer

Explain how storm surges can affect human life in Florida. Use complete sentences.

Recall the topography of the Sierra Nevada Mountains east of California's central valley. Which of the following locations would have the highest average annual precipitation levels. 1. estern slope2. central valley3. western slope

How can the time period of a pendulum be decreased or increased

A space probe is sent to the vicinity of the star Capella, which is 42.2 light-years from the earth. (A light-year is the distance light travels in a year.) The probe travels with a speed of 0.9930c.

ngrid kicks a football with an initial velocity of 12 m/s at an angle of 45° relative to the ground. The horizontal component of the initial velocity to the nearest tenth is m/s.

A 60-watt light bulb has a voltage of 120 volts applied across it and a current of 0.5 amperes flows through the bulb. What is the resistance of the light bulb?

In a laboratory experiment, a diffraction grating produces an interference pattern on a screen. If the number of slits in (including the slit spacing) the same, then The fringes stay the same brightness and get closer together.