A child sitting 1.10m from the center of a merry-go-round moves with a speed of 1.25m/s. calculate (a) the centripetal acceleration of the child, and (b) the net horizontal force exerted on the child (mass=25.0 kg)

How much heat is released when a 10 gram piece of aluminum foil is taken out of the oven and cools from 50 10 c

The theory that light exists in quantized "chunks" was proposed in response to which of the following? A. Electron interference patterns O B. Discovery of Planck's constant O C. The ultraviolet catastrophe O D. Emission spectra

A man pushes a box of 40kg up incline of 15°, if the man applies a horizontal force of 200N and the box moves up the plane a distance of 20m at a constant velocity and the coefficient of friction is 0.1, find work done against friction

Who discovered the x-ray?

Which of the following is a supersonic speed? Mach 0.005 Mach 0.05 Mach 0.5 Mach 5

Which is the correct formula for cellular respiration? a. 6 CO2 + 6 H2O + light energy → C6H12O6 + 6 O2 b. CO2 + H2O → C6H12O6 + O2 c. C6H12O6 + O2 → CO2 + H2O d. C6H12O6 + 6 O2 → 6 CO2 + 6 H2O + ATP energy

A tree is standing in the middle of a meadow. As you watch, the wind begins to blow and the tree bends. Which statement best explains how you could tell that a net force was acting on the tree? OA) The tree had momentum.

Consider two cars, a 700kg Porsche and a 600kg Honda Civic. The Porsche is speeding along at 40 m/s (mph) and the Civic is going half the speed at 20 m/s.

Which statement about an electron in the 4d state is correct? A. The magnitude of its orbital angular momentum is 6√ℏ. B. The largest orbital angular momentum it could have in any given direction is 4ℏ. C.

A D note has a frequency of 587.33 Hz. Calculate its wavelength in meters. The speed of sound is 343 m/s