Physics Answers

Two spherical objects have masses of 1.2 x 10^4 kg and 3.6 x 10^3 kg. A

distance of 4500 m separates their centers. Find the gravitational

attraction between them.

A piece of alloy weights 0.86N in air and 0.73N When Immersed in water. Find volume and the density of the alloy

How much energy is stored in a 50pF capacitor when it is charged to a potential difference of 200V?

In a copper wire of diameter 2mm, 3×10^23 electrons flow in one second. Calculate the electric field magnitude

5. Compute the electrostatic force experienced by -4.33 x 10-18 C from the following electricfield.

(a) E = 5 465 N/C

(b) 9.5 x 1015 N/C

A force 16 N pushes the 2 blocks (m1 = 3kg and m2 = 5 kg) in a horizontal surface but doesn’t move. What is the static coefficient friction of the blocks?

The increase in the volume of 19cm³ of mercury when the temperature rises by 100°¢ is 0.182cm³.what is the cubic expansivity of mercury

find the total capacitance for three capacitors connected in series, given their individual capacitances are 1.0 F, 5.0 F, and 8.0 F. ( 0.755 microfarad)

A steel post 15 cm in diameter and 3 m long is placed vertically and is required

to support a load of 10,000 kg.

(a) What is the stress in the post?

(b) What is the strain in the post?

In a copper wire of diameter 2mm, 3×10²³ electrons flow in one second. Calculate the current density magnitude