What are star system

How does the nuclear charge relate to the energy of the 1s orbital?

A driver has a reaction time of 0.50s, and the maximum deceleration of her car is 6.0m/s2. She is driving at 20m/s when suddenly she sees an obstacle in the road 50m in front of her. Can she stop the car in time to avoid the collision?

Electromagnets in radios can be used to A) play a CD. B) create sound. C) change the station. D) make a remote control.

The cheetah is one of the fastest-accelerating animals, because it can go from rest to 19.6 m/s (about 44 mi/h) in 2.9 s. If its mass is 108 kg, determine the average power developed by the cheetah during the acceleration phase of its motion.

Which tool converts sunlight into electricity? A. photovoltaic cell B. turbine C. battery D. copper tubing

Sally places a jar with some pennies into a pool of water and exactly half of the jar is submerged. The volume of the jar is 200 cm3 and the density of the water is 1 g/cm3. a. What is the buoyant force acting on the jar? b.

According to the law of reflection the angle of incidence is equal to the angle of blank

Sound travels 2146 m through a material in 1.4 seconds. What is the material?

The relationship between frequency and wavelength is a (n) relationship

Use g = 9.8 m/s2. From the top of a cliff, a person throws a stone straight downward. The initial speed of the stone just after leaving the person's hand is 9.7 m/s.