What type of system allows matter and energy to enter and exit?

A. Connected

B. Isolated

C. Closed

D. Open

Which of the following are narrow islands formed by deposition? A. Barrier beaches B. Cirque C. Deltas D. Fjord

A force of 1.5 * 102 N is exerted on a charge of 1.4 * 10-7 C that is traveling at an angle of 75° to a magnetic field. If the charge is moving at 1.3 * 106 m/s, what is the magnetic field strength? 8.2 * 102 T 8.5 * 102 T 3.2 * 103 T 6.4 * 1010 T

It takes 3 minutes to make toast in a 1500 watt toaster. Calculate how much work is done by the toaster. A) 8.3 J B) 60 J C) 90,000 J D) 270,000 J

A radioactive isotope that can be followed through the steps of a chemical reaction is an indicator.

Which of the following statements is true about the taiga biome, but not the alpine?. a ... Temperatures are below freezing during the winter ... b ... Precipitation can average 12 inches annually ... c ... It has two distinct seasons ... d ...

What is the difference between contact forces and forces that act through a force field?

Suppose two parallel-plate capacitors have the same charge Q. but the area of capacitor 1 is A and the area of capacitor 2 is 2A. 1.

You want to launch a stone using the elastic band of a slingshot. The force that the elastic band applies to an object is given by F = - α∆s4, where α = 45 N m4 and ∆s is the displacement of the elastic band from its equilibrium position.

Which of the following statements regarding emails is true

If your fitness evaluation score is not satisfactory, set a new goal for the assessment and train for that goal. true or false