Which of the following is the least reliable source of background information for a scientific project?

general Internet site

government Internet site

library reserve section

scientific journal

A battery and a resistor are wired into a circuit. The resistor dissipates 0.50 W. Now two batteries, each identical to the original one, are connected in series with the resistor. Part A What power does it dissipate?

Why do microwave ovens heat food, but tend not to heat the dish the food is on? A. Only certain molecules, such as water, can absorb microwaves. B. The dish is positioned lower than the food. C.

On what kind of coast line would you predict the largest tidal ranges to occur?

You launch a ball at an angle of 35 degrees above the horizontal with an initial velocity of 38 m/s. What is the horizontal distance the ball will traveling before hitting the ground? [Must show work]

21) An aspirin has a mass of 325 mg. If the mass of the aspirin could be converted to energy with 100% efficiency, how many joules of energy would be produced?

A stationary speed gun emits a microwave beam at 2.10*10^10Hz. It reflects off a car and returns 1030 Hz higher. What is the speed of the car?

Discuss the changes in potential energy and kinetic energy and total energy for skateboarder going up and down on a half pipe ramp

The diagram below shows rock is affected when water enters cracks in rock, freezes and becomes ice

A vertical piston-cylinder device contains a gas at a pressure of 100 kPa. The piston has a mass of 5 kg and a diameter of 12 cm. Pressure of the gas is to be increased by placing some weights on the piston.

Evaluate the force of a skateboard exerts on you if your mass is 60kg and you push on the skateboard with a force of 60N