Physics Answers

An object weighing 58,800 N rests on the flatbed of a truck. It is held in place by metal brackets that can exert a maximum horizontal force of 9000 N. When the truck is traveling 15 m/s, what is the minimum stopping distance if the load is not to slide forward into the cab?

A 100 nC charge is placed at the origin. A -50 nC charge is placed at x= 5 cm and a 200 nC is placed at x= -10 cm.

 a. What is the net electrostatic force acting on 100 nC charge?

Three positively charged spheres, each with a charge of 4.0 x 10 ^-6 C, are fixed at the vertices of an equilateral triangle whose sides are 20 cm long. Calculate the magnitude of the net electrostatic force on the third charge.

a.9.24N ; Ɵ = 30°

b.16.24N ; Ɵ = -60°

c.6.24N ; Ɵ = -30°

d.8.24N ; Ɵ = -30°

A 100 nC charge is placed at the origin. A -50 nC charge is placed at x= 5 cm and a 200 nC is placed at x= -10 cm.

 a.What is the net electrostatic force acting on 100 nC charge?

a.0.876 N

b.0.24 N

c.0.04 N

d.0.78 N

A flower pot is accidentally dropped from a building window 400m from the ground. Assuming it starts from rest, a How long will it take the pot to reach the ground?

How much charge flows from each terminal of a 12.0-V battery when it is connected to a 5.00-μF capacitor?

A body of mass 12.0kg is placed on an orange tree 20.0m above the ground.

1. Calculate it's potential energy with respect to the ground.

2. If the body is released from thos height,what will be it's kinetic energy just before it hits the ground.

The speed limit in a school zone is 40 km/hr. A driver traveling at this speed sees a child run onto the road 13 m ahead of his car. He applies the brakes, and the car decelerates at a uniform rate of 8 m/s². If the driver’s reaction time is 0.25 s, will the car stop before hitting the car?

The speed limit in a school zone is 40 km/hr. A driver traveling at this speed sees a child run onto the road 13 m ahead of his car. He applies the brakes, and the car decelerates at a uniform rate of 8 m/s². If the driver’s reaction time is 0.25 s, will the car stop before hitting the car?

A man used his prototype invention, the 3D Maneuver Gear, to navigate his hometown. He maintained his velocity of 96 m/s as he swung on top of a 15-storey building, his anchors placed 250 m away, at the height of 325 m. He swung 52.43° to propel himself up, then 35° to the West to reach his endpoint. How fast is he in all 3D components?