Ultraviolet light emits a total of 2.5 * 10^-17 J of light at a wavelength of 9.8 * 10^-7 m. How many photons does this correspond to?

Two boys push on a box. They each push to the left with a force of 50 N. At the same time, a third boy pushes on the box, to the right, using a force of 50 N. What is the net force on the box?

All But one describes an effect of aging on the musculoskeletal system. A) loss of muscle tone B) bones become fragile C) increased osteoporosis D) fluid in joints builds up

When one vehicle is towing another by means of a chain the chain must?

How do satellites stay in orbit?

A motor is powered by a battery with an energy capacity of E_{battery} = E battery = 1 WHr (1 WHr = 3600 Joules). The motor sits at the top of a concrete ramp and is connected to a cable that is used to pull a 68.

The Burj Khalifa in Dubai is the tallest building in the world at about 828 m. A daredevil climbs to the top of the building and sees the the Boulevard Plaza 2 (141 m tall) about 300 m away.

Suppose the initial position of an object is zero, the starting velocity is 3 m/s and the final velocity was 10 m/s. The object moves with constant acceleration. Which part of a velocity bs.

Identify which type of scientist would use spectroscopy for each purpose. Identification of the composition of the sun and stars: Determination of chemical bonds: Prediction of the efficiency of possible laser materials: Identification of harmful

The distance a wave moves from resting position

Which of the advantages to social media as a new media could also be viewed as a disadvantage