Which of the following is a scalar quantity?

A.

90 km/hr north

B.

20 m/s at an angle of 25

C.

30 pounds

D.

15 N down

Magnetic field lines exit out of the?

Quiescent air is at 20°C (treat air as ideal gas). A plate of depth 50 cm and width 40 cm has a temperature of 40°C on the top surface. Calculate the heat dissipated from the top surface.

he magnetic field strength at the north pole of a 2.0-cmcm-diameter, 8-cmcm-long Alnico magnet is 0.10 TT. To produce the same field with a solenoid of the same size, carrying a current of 1.

Which of the following did Christian Doppler explain? A. Atmospheric changes that affect climate B. The transfer of electricity through solids C. The changing colors of binary stars D. The radioactivity of certain elements

At a grocery store, 20 fl oz of brand A vitamin water is sold for $0.95. What is the unit price of the vitamin water per ounce, to the nearest cents?

Determine the amount of potential energy of a 5 Newton's book that is moved to three different shelves on a bookcase. The height of the shelves is 1.0 meter, 1.5 meter, and 2.0 meter

Which atom is involved in giving your heart energy to beat? carbon gold oxygen iron

Which of the following is the most accurate statement concerning the properties of matter? a. they can be written as symbols b. they can be observed and measured c. they cannot be tested or verified d. they change with the amount of matter present

Danilo is sliding down a slide. What forces are acting on him as he slides

If you want your investment or savings account to be easily turned into cash without losing its value, you should consider the?