What is the part of an electromagnetic spectrum that human eyes detect?

A tractor drags a 100 lb. concrete block 5 ft. in 2 seconds. What is the power output of the tractor? 100 ft-lbs. per second 250 ft-lbs. per second 500 ft-lbs. per second 1,000 ft-lbs. per second

A cord is wrapped around the rim of a solid uniform wheel 0.250 m in radius and of mass 9.20 kg. A steady horizontal pull of 40.0 N to the right is exerted on the cord, pulling it off tangentially from the wheel.

Physics principles involved in the tablecloth trick?

How do the nuclei of different isotopes of an element vary?

A vibration platform oscillates up and down with a fixed amplitude of 8.1 cm and a controlled frequency that can be varied.

How do you get a resultant factor? A. Add two or more vectors B. Add two scalars C. Multiply two scalars D. Multiply two vectors

A panpipe is made of five pipes. The longest pipe is 25 centimeters long and the shortest is 5 centimeters long. Which of these pipe produces the highest-frequency sound and why?

Model rocket A is launched at an angle of 70° above the x axis, with an initial velocity of 40 m/s. An identical rocket B is launched under the same conditions at an angle of 90° above the x axis, also with an initial velocity of 40 m/s.

Why is it that when you throw a Frisbee, it flies better when it is normally thrown and not upside down?

Four blocks of weights are required using which any body whose weight is between 1kg and 40 kg can be weighed. Find the four weights