Evaluate tan45/tan45

Tectonic plates move on which layers of the Earth? a. Crust and upper mantle b. Crust and mantle c. Upper and lower mantle d. Crust, mantle, outer core

Explain why the friction force between two surfaces increases if the force is pushing the surfaces together increases.

What is volt equivalent to? ohm A) amps B) degrees C) ohms D) volts

What is the velocity (in m/s) of a 550 kg roller coaster cart at the bottom of the track if it started with 990,000 J of gravitational potential energy at the top of the track? Assume a frictionless surface.

Alkaline batteries have the advantage of putting out constant voltage until very nearly the end of their life. How long will an alkaline battery rated at 1.00 A*h and 1.58 V keep a 1.00-W flashlight bulb burning?

What is a fault? A. the name for 2 opposing forces B. a type of crust that moves under heavier crust C. A crack in earths crust where movement occurs D. A volcanic region where new material is being created

18. Which does not affect the strength of an electromagnet? A the current in the solenoid B the temperature of the coil OC the number of loops in the coil D the type of ferromagnetic core

What causes the electric charges to flow from one end of the battery to the other? a balance in electric potential a balance in resistance a difference in electric potential a difference in resistance

What is one exsample of a closed economy

A transfer by work from the system, an elevation decrease of 50 m, and an increase in velocity from 15 m/s to 30 m/s. The specific internal energy, u, decreases by 5 kJ/kg and the acceleration of gravity is constant at 9.7 m/s².