What wavelengths of light should be used to maximize plant growth with a minimum of energy expenditure?

A 12 Volt lead-acid car battery, engineered for "up to 500 or more charge/discharge cycles," has a rating of 95.0 Ampere-hours. It sells for $ 126.00.

Which branch of physics deals with the study of force, energy, and motion?

Two identical cans, one filled with lead shot and the other with feathers, are dropped from the same height by a student standing on a chair. Which can, if either, experiences the greater force due to the gravitational attraction of the Earth?

A wheel rotates without friction about a stationary horizontal axis at the center of the wheel. A constant tangential force equal to 80 N is applied to the rim of the wheel. The wheel has radius 0.12 m.

Two technicians are discussing U-joints. Technician A says that a defective U-joint could cause a loud clunk when the transmission is shifted between drive and reverse.

Why did the chicken cross the road.

A 98.1 kg horizontal circular platform rotates freely with no friction about its center at an initial angular velocity of 1.69 rad/s. A monkey drops a 9.29 kg bunch of bananas vertically onto the platform.

7. A type of non-renewable energy would be: O wind O petroleum O water solar

A refrigerator is a system. The energy input into the refrigerator system (in the form of electricity) is the same as the amount of energy output from the system. Which of the following best describes the energy output of the system?

A 1,120 kg car is travelling with a speed of 40 m/s. Find its energy.