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What is inverse square law for light waves? how was it applied there? and how light is being filtered in a polarizer as well as in neutral filter..
A football player runs directly down the field for 36 m before turning to the right at an angle of 22 from his original direction and running an additional 12 m before being tackled. a) What is the
A 91.0 N grocery cart is pushed 12.0 m along an aisle by a shopper who exerts a constant horizontal force of 40.0 N. If all frictional forces are neglected and the cart starts from rest, what is th
If you are in an automobile accident with an initial speed of 112 km/h and are stopped by an airbag that inflates from the dashboard, over what distance must the airbag stop you for you to survive
The effect of high pressure on organisms, including humans, is studied to gain information about deep-sea diving and anaesthesia. A sample of air occupies 1 L at 25 0C and 1 atm. What pressure is n
A 60 kg boy and a 40 kg girl use an elastic rope while engaged in a tug-of-war on a frictionless icy surface. If the acceleration of the girl toward the boy is 2.8 m/s2, determine the magnitude of
The driver of a 1250 kg car, initially traveling at 11.6 m/s, applies the brakes, bringing the car to rest in a distance of 20.5 m. Find the net work done on the car.
A shot-putter puts a shot (weight = 70.7 N) that leaves his hand at distance of 1.53 m above the ground. Determine the change (ΔPE = PEf - PE0) in the gravitational potential energy of the shot.
An ocean liner leaves New York City and travels 21.0° north of east for 134 km. How far east and how far north has it gone? In other words, what are the magnitudes of the components of the ship
An observer, whose eyes are 1.90 m above the ground, is standing 43.0 m away from a tree. The ground is level, and the tree is growing perpendicular to it. The observer's line of sight with the tre
Find the magnitude of the gravitational force that each part exerts on the other out in space, far from any other objects.
A mine shaft has an elevator hung from a single steel wire cable of diameter 2.5 cm. When the cable is fully extended, the end of the cable is 500 m below the support. How much does the fully exten
How to discuss the results in relation to the objectives of the experiment of CENTRIPETAL FORCE?Next, how am i supposed to elaborate the results that i obtained if my results are confirmed the cent
Suppose you carry a bag of groceries weighing 127 N from your car to your kitchen, a distance of 57 m, without raising or lowering the bag.
if 155 g is suspended at 210 degree, what masses must be suspended at 0 degree and 90 degree to balance this force?
A rectangular barge, 5m long and 2 m wide, floats in fresh water. Suppose that 400 kg crate is loaded onto the barge. Show that the barge floats 4cm deeper.
A 45-N crate is suspended from the left end of a plank. The plank weighs 21 N, but it is not uniform, so its center of gravity does not lie halfway between the two ends.
The net force accelerating the projectile is 4.9 * 10^5 N. How much time is required for the projectile to come up to speed?
An apartment has 1100 ft2 of floor space. What is the approximate volume of the apartment?
A circular curve of highway is designed for traffic moving at 92 km/h. Assume the traffic consists of cars without negative lift. (a) If the radius of the curve is 210 m, what is the correct angle o
Find the tensions in the rope that are required to make him follow his circular path, at a height of 1.5 m above the bottom of the circular arc.
An anti tank weapon fires a 3 kg rocket which acquires a speed of 50m/s after travelinf 90cm down a launching tube. assuming the rocket was accelerated uniformily, what is the average force acted o
An object is thrown upward from the origin along the positive y direction and caught. Which graph correctly describes the y coordinate of the vertical motion while the object is in the air?
A spring has a force constant of 909 N/m and an unstretched length of 6 cm. One end is attached to a post that is free to rotate in the center of a smooth table, as shown in the top view below. The
A 35 kg child sits in a swing supported by two chains, each 3.7 m long. The acceleration of gravity is 9.8 m/s2 . If the tension in each chain at the lowest point is 240 N, find the child's speed at