A total solar eclipse is visible from

a. all over Earth.

b. only within the moon's umbra.

c. only within the moon's penumbra.

d. only the dark side of Earth.

Logan observes a paramecium under a microscope. The eyepiece of the microscope has a horizontal scale marked in mm. The paramecium starts at the 65 mm mark and ends up at the 39 mm mark.

The suffix "-ose" indicates

An MP3 player draws a current of 0.120 ampere from a 3.00-volt battery. What is the total charge that passes through the player in 900. seconds? (1) 324 C (3) 5.40 C (2) 108 C (4) 1.80 C

Jake calculates that the frequency of a wave is 230 hertz and that the wave is moving at 460 m/s. What is the wavelength of the wave?

Two stars of mass m and M, separated by a distance d, revolve in circular orbits about their center of mass. Show that each star has the same period and find it.

A cell provides 6 V to an LDR. The current through this LDR is measured and is found to be 3 A. What is the resistance of the LDR?

A car travels along eastward with a constant velocity. the magnitude of the acceleration of the car is

What is the weight of a 65 kg astronaut on mars?

When lava cools, what type of Rock forms?

A uniformly charged conducting sphere of 1.1 m diameter has a surface charge density of 6.2 µC/m2. (a) Find the net charge on the sphere. (b) What is the total electric flux leaving the surface of the sphere?