Haley’s Comet can only be viewed once in every 76 years. How fast is it moving if it is
1.56 x 1020 m away from the Earth? If its mass is about 3,000 kg, how much force is keeping it in orbit?
codys car accelerates from 0m/s to 45m/s northward in 15 seconds what is the acceleration of the car
two spherical objects have equal masses and experience a gravitational force of 25 N towards one other . Their centers are 36 cm apart . determine each of their masses .
The ball is tied to a string to whirl it having a radius of 40.0 cm at a velocity of 2.5 m/s. What will be
the acceleration of the ball?
1-5 The ball is tied to a string to whirl it having a radius of 40.0 cm at a velocity of 2.5 m/s. What will be
the acceleration of the ball?
Sphere A has charge of +10.0 C. It is brought in contact with a neutral sphere B and then separated. Find the final charges on spheres A and B if
a. The spheres have equal radius and
b. If the radius of sphere B is twice the radius of sphere A
A 1.5 N stone is thrown vertically upward with an
initial speed of 15 m/s . Calculate
a. P.E at the maximum height
b. K.E at the instant it will strike the ground
c. P.E after 1 s
d. K.E after 1 s
Three resistors R1=1.00Ω , R2=2.00Ω , and R3=2.00Ω , are connected in series The series connection is attached to a V=3.00V voltage source.
a. What is the equivalent resistance?
b.find the current supplied by the source to the series circuit?
The most usually-studied capacitors is made up of two parallel conducting plates. These are separated by 1.77 mm. What is the capacitance in air if the plate in 17 cm2? What is the charge is a potential difference of 120 V is applied?
Two neutrally-charged bodies are separated by 2cm. Electrons are moved from one body and placed on the second body until a force of 1.7x10-7 N is generated between them. How many electrons were transferred between the bodies?