A set of keys slides along the floor, coming to rest 1.4 meters from where it started. If the initial speed of the keys was 2.1m/s, then the acceleration of the keys is?

A person is standing still and listening to a siren sounding an alarm. The frequency of the sound is 500 Hz. The person begins running toward the sound at a rate of 20 m/s. The frequency of the sound the person hears will

Which vessels have a tunica media with relatively more smooth muscle than elastic tissue, and an elastic membrane on each face of the tunica media?

2. The amount of charge and the distance from the charge determine the ... A: Strength of the negative charge B: Strength of the positive charge C Strength of the electric field D: Static electricity Also tell me why the answer is the answer, I'm

The presence of which magnetic feature best explains why a magnet can act at a distance on other magnets or on objects containing certain metals?

1. Describe what happens to the gravitational when you increase mass versus when you increase distance.

As a mercury atom absorbs a photon of energy, an electron in the atom changes from energy level d to energy level e. Determine the energy of the absorbed photon in electronvolts.

During an exothermic reaction, the energy given off comes from atoms being consumed mass being burned into energy the breaking and forming of bonds mass being created

Can electrostatic attract both pull and pull?

Ways that charges can be transferred

A cricketer can throw a ball to a maximum horizontal distance of 100m. How much high above the ground can he throw same ball