What is the direction of force of friction acting ona moving objec

Gamma-ray bursters are objects in the universe that emit pulses of gamma rays with high energies. The frequency of the most energetic bursts has been measured at around 3.0 * 1021 Hz. The speed of light is 3 * 108 m/s.

Is a persons DNA likely to be more similar to the DNA of his biological parents or to the DNA of one of his first cousins

1. You wish to heat 20 kg of water from 40°C to 80°C. How many kcal of heat are necessary to do this? To how many kJ does this correspond?

One morning, Jane notices drops of water on the outside of a window. Later in the day, she notices that the drops have disappeared. What most likely caused the drops to disappear?

When a certain horizontal spring is stretched a distance 10 cm, it exerts a restoring force of magnitude f = 20 n. the work done by a person in stretching this spring from x = 0 to x = 10 cm is

What does the slope of a distance-versus time graph show you about the motion of an object

dinosaurs emerged during what time period

If you wanted to soundproof a room what insulator would you use

Magnetic fields affect certain metals but especially the metal

The order of elements in the periodic table is based on?