A narrow region between two air masses of different densities is a

Juanita studies several free-body diagrams in which a normal force is shown. What is always true about a normal force in a free-body diagram? a. It is opposite the weight. b. It is perpendicular to a surface. c. It is opposite the net force. d.

A car has a speed of 2 m/s and a mass of 1500 kg. What is the cars kinetic energy?

The electromagnetic waves that have the lowest frequency is called

How many subatomic particles are in the element moscovium? Will give brainliest!

In order for a space shuttle to leave Earth, it must produce a great amount of thrust. Its rocket boosters create this thrusting force by burning great amounts of fuel. However, once in space, the shuttle needs very little fuel.

What best describes the angle between a changing electric field and the electromagnetic wave produced by it? 1. always equal to a right angle 2. always less than a right angle 3. varies from parallel to perpendicular 4.

Which data set has the smallest standard deviation? A. 1,6,19,20,85,29,0 B. 22,22,23,23,22,22,23 C. 6, 7, 6, 7, 1004, 980, 350 D. 99, 199, 299, 55, 44,33, 22

To calculate the specific heat capacity of some liquid, we have poured 235 g of water at a temperature of 18.0°C into 250 g of this liquid at a temperature of 27.0 °C in a calorimeter with a heat capacity of 210 J/K. The temperature stabilized at 20.

How do you reduce friction

3. A 16 kg barrel is lifted up by a rope. The barrel accelerates at 1.4 m/s2. Find the force exerted by the rope. Show all your work. Answer: