A device used to measure small currents is a (n)

a.

electric motor.

b.

commutator.

c.

armature.

d.

galvanometer.

Taja walks two miles north from her door to the park, then returns home to her door distance and displacement

An object that is moving must have a change A) its speed. B) its position Formulas 0 its acceleration its applied force. Highlight

Which of the following is not accurate when describing solids? A. Solids are better conductors of heat than liquids B. The amount of pressure exerted by a solid is solely dependent on its mass. C. Solids with many air pockets are good insulators. D.

The temperature rises from 25.00°C to 29.00°C in a bomb calorimeter when 3.50 g of sucrose undergoes combustion in a bomb calorimeter. Calculate ΔE rxn for the combustion of sucrose in kJ/mol sucrose. The heat capacity of the calorimeter is 4.

An 85kg man is jogging with a velocity of 2.6m/s to the north. nearby a 65kg person is skateboarding and traveling with a velocity of 3m/s north. which person has greater momentum show your calculations

If the abosolute of a gas is 600 k, the temperature in degrees Celsius is

How does an electromagnetic wave propagate itself? a. A changing magnetic field induces an electric field perpendicular to the magnetic field. b. A changing electric field induces a magnetic field perpendicular to the electric field. c.

Which of the following is an example of convection? A. hot air rising and cooler air falling B. a hot object transferring heat to a cooler one C. a hot oven warming the air around it D. the rays of the Sun warming the earth

A 50,000 kg locomotive is traveling at 10 m/s when its engine and brakes both fail. How far will the locomotive roll before it comes to a stop? Assume the track is level.

A rectangular loop of wire with sides 0.262 and 0.401 m lies in a plane perpendicular to a constant magnetic field (see part a of the drawing). The magnetic field has a magnitude of 0.