Sunscreen protects your skin from sunburn. For sunscreen to be effective, it must block or absorb A. X rays. B. visible light. C. infrared light. D. ultraviolet light.

Genetic variation is based on the?

A capacitor with plates separated by distance d is charged to a potential difference ΔVC. All wires and batteries are disconnected, then the two plates are pulled apart (with insulated handles) to a new separation of distance 2d.

Rohit is trying to tune an instrument. He strikes a tuning fork and then plays a note that almost matches it. Rohit hears the volume of the two waves beating, which sounds like "wah-wah-wah-wah.

According to the label on a bottle of salad dressing, the volume of the contents is 0.473 liter (L). Using only the conversions 1 L = 1000 cm3 and 1 in. = 2.54 cm, express this volume in cubic inches.

Does the lattice energy of an ionic solid increase or decrease as the charges or sizes of the ions increase?

A tape dispenser is an example of which simple machine pulley lever inclined plane screw

A brick with a mass of 20 kg and a weight of 196 N is released on a frictionless plane at an angle of 30°. What is the acceleration of the brick? A. 4.9 m/s2 B. 5.6 m/s2 C. 8.5 m/s2 D. 9.8 m/s2

As light reflects off a mirror the angle between the incident ray and reflected ray of light is 50°. What is the angle of reflection?

In what part of the earth does convection occur?

13.00 cm + 2.56 mm + 0.0047 = cm? Solve problem with correct number of significant digits