Luis weighed 80 pennies and found out they have a total mass of 240 grams. what is the mass of one penny?

A force of 15 N acts upon a 3 kg block. Calculate the acceleration of the object. Question 2 options: A. 75 m/s^2 B. 5 m/s^2 C. 45 m/s^2 D. 18 m/s^2

Do you think you could identify a mystery substance using only its mass or weight? Explain your answer.

Which statement describes the kinetic energy and total mechanical energy of a block as it is pulled at constant speed up an incline? (1) Kinetic energy decreases and total mechanical energy increases.

In the design of wall and column forms, the two most important factors are which of the following? a. rate of placement of the concrete and the climatic conditions b. length of the wall or column and the temperature of the concrete in the forms c.

What is different about each type of electromagnetic wave? Frequency Speed Wavelength Frequency and wavelength

An alpha particle travels at a velocity of magnitude 550 m/s through a uniform magnetic field of magnitude 0.045T. (An alpha particle has a charge of charge of + 3.2 x 10-19 C and a mass 6.

A woman tries to put lipstick in the car. She has to come to a fast stop, and the lipstick falls to the floor and rolls forward, under the brake pedal. She dies. Why does this happen?

The slope of the line on any speed vs time graph is equal to the objects?

True or False? a globular cluster is a group of older stars that are clustered together.

The doppler effect is the change in observed frequency due to