Your brother's mass is 40.0 kg, and he has a 1.30 kg skateboard. what is the combined momentum of your brother and his skateboard if they are going 8.50 m/s?

The refrigeration unit on an ice cream truck is rated at 35,500 Btu/hr. What is the amount of heat removed if is operates for 2.75 hours?

Duncan takes a break from studying and goes to the gym to swim laps. if swimming burns 8.75Ã105 cal per hour, how many kilojoules does swimming burn in that same amount of time? in other words, convert 8.75Ã105 cal to kilojoules.

Describe the arguments supporting the idea that quasars are at the distances indicated by their redshifts.

The amount of light entering a camera or your eye is regulated by a. an eyepiece c. an aperture. b. the cornea. d. a set of compound lenses.

Sue and Sean are having a tug-of-war by pulling on opposite ends of a 5.0-kg rope. Sue pulls with a 15-N force. What is Sean's force if the rope accelerates toward Sue at 2.0 m/s2?

A solid metal ball and a hollow plastic ball of the same external radius are released from rest in a large vacuum chamber. When each has fallen 1 m, they both have the same?

Juan is interested in finding out whether hummingbirds are attracted to some flowers more than others. In what order should Juan perform the steps of his experiment?

Will make Brainlest! <3 Metals are considered to be good conductors of heat. How do the specific heat values indicate this?

Which example identifies a change in motion that produces acceleration? choices are: 1. a speed skater moving at a constant speed on a straight track 2. a ball moving at a constant speed around a circular track 3.

Which of the following diagnostic procedures uses ultrasound?