Physics Answers

To burn the fats she accumulated during the enhanced quarantine time, Inday walks south at a speed of 3 m/s for 10 minutes. She then turns around and walks north a distance 1000 m in 5 minutes. What is her total distance covered?

a. 2,800 m

b. 11,800 m

c. 300,000 m

d. 2,030 m

A certain pendulum has a period of 1.7s on Earth. What is the period of this pendulum on a planet that has a gravitational acceleration of 15m/s 2. 

1.    A 15kg block of wood is at the top of the table. What is the normal force exerted by the table on the block?

a.    741N                                            c. 1.53N

b.    147N                                            d. 24.8N

Suppose that the net external force

(push minus friction) exerted on a

lawnmower is 51 N (about 11 lb)

parallel to the ground. The mass of

the mower is 24 kg. What is its

acceleration?

Two charges q1 = 4microC and q2 = -7 microC by 3.5m and 1.5m. Calculate the electric potential at point B having a distance of 2m.

A block of mass 4kg is on the point of slipping down a plane inclined at an angle of 30° to the horizontal.What force parallel to the plane will just move it up the plane?

An electric dipole consists of two equal but unlike charges separated by a distance. Two point charges, q1 = +4.5 x 10-6 C and q2 = -4.5 x 10-6 C, are separated by 6.4 x 10-2 m, forming an electric dipole as shown in the figure. Find the electric field halfway between the dipole.

Calculate the capacitance of two plates area 4cm² seperated by 1mm

Suppose you need a capacitor bank with a total capacitance of 0.750-mF but you have only 1.50-mF capacitors at your disposal. What is the smallest number of capacitors you could connect together to achieve your goal, and how would you connect them?

a cell has an e.m.f. of 3v. when it is connected across a resistor of resistance 4ohms, a current of 0.5a passes through the current. calculator the internal resistance