Northern lights & auroras can be seen within the what sub layer

A remote-controlled car is moving in a vacant parking lot. The velocity of the car as a function of time is given by (a) What are and, the x - and y-components of the velocity of the car as functions of time?

Two particles oscillate in simple harmonic motion along a common straight-line segment of length a. each particle has a period of 1.5 s, but they differ in phase by pi/6 rad. (a) how far apart are they (in terms of a. 0.

Ohm's law states a relationship between voltage, current, and charge. that less current flows when a higher voltage is applied. that for constant voltage, a greater resistance means more current will flow.

1. How many calories of heat are required to raise the temperature of 550 g of water from 12.0°C to 18.0°C? (remember the specific heat of water is 1.00 cal/g x °C)

Which of the following is/are true about the size of stars? Select all that apply. One solar mass is equal to the mas of the Sun Most stars are smaller than the Sun Most starts are larger than the Sun The Sun is smaller than average There are some

The sum of potential and kinetic energies in the particles of a substance is called energy. True or False

Element X has a mass number of 40 and an atomic number of 20, and element Y has a mass number of 56 and an atomic number of 26. Element X has more neutrons and fewer electrons than element Y. more neutrons and electrons than element Y.

How does mass affect average speed?

Object A attracts object B with a gravitational force of 10 newtons from a given distance. If the distance between the two objects is doubled, what is the changed force of attraction between them? A. 2.5 newtons B. 5 newtons C. 20 newtons D.

A small particle starts from rest from the origin of an xy-coordinate system and travels in the xy-plane. Its acceleration in the x-direction is 2.0 m/s2, and its acceleration in the y-direction is 1.0 m/s2.