Calculate the time needed to accelerate a 40 kg object from 2 m/s to 12 m/s if a force of 8 N is applied. a 400 seconds b 10 seconds c 50 seconds d 0.2 seconds

An AC source with an output rms voltage of 27.0 V at a frequency of 60.0 Hz is connected across a 12.2-µF capacitor. (a) Find the capacitive reactance. Ω (b) Find the rms current. A (c) Find the maximum current in the circuit.

Question 14 Unsaved A student says that all pure substances are elements. Do you agree? Why or why not? Question 14 options: I disagree. All pure substances are also mixtures. I disagree. Elements are not pure substances.

An old teacher runs across the floor with a velocity of 0.5 m/s (he's slowing down) with a mass of 80 kg. a. How much KE does he have now? b. what is the weight of the old teacher

Molecules are groups of atoms connected together. Which substances in the simulation have particles that are molecules?

Which force acts as an object to move it from rest or a constant straight line motion

Which of the following statements does not describe the structure of an atom? a. An atom has a small, dense center called the nucleus. b. Inside the nucleus of an atom are protons and electrons. c. Protons are positively charged sub-atomic particles.

A. Which skill related fitness component is your strongest and weakest?

A 100 N box is placed on an inclined plane that makes a 30° angle with the horizontal. Calculate the component of gravitational force that acts down the inclined plane. A. 25 N B. 50 N C. 87 N D. 100 N

Approximately how many kelvins are equal to 60 c? a. 289k b. 323k c. 333k d. 413k

What are two ways to change velocity?