Physics Answers

What is the acceleration of a 500 kg tricycle moving at 8 m/s takes a turn around a circle with a radius of 20m?

Compare the duration between a micro year and a 1minute TV commercial and a micro century and 60 minute TV programme.

A medallion made of nickel (coefficient of linear expansion = 1.5 x 10^-5/K) has a diameter of 0.1m at 20^oC. What will be its diameter at 35^oC?

A tall unclothed athlete with a skin temperature of 34^oC stands in a dark room with a temperature o 23^oC. The athlete’s skin has a surface area of 1.7m². What is the rate of heat transfer via radiation from the athlete? (e_skin  = 0.97)

A glass container ( k=1.05 W/m-K) with a surface area 0.3m² is filled with hot water at 100^oC and was let to cool in a room with a temperature of 27^oC. If the walls of the container are 0.8cm thick, how much heat is transferred from inside the glass to the room per second?

what is the frictional force of a box if A student is pushing a 80kg box across a floor by applying a 503N force to the right. The coefficient of static friction between the box and the floor is 0.6 and the coefficient of kinetic friction is 0.50

Chief Boolie, the jungle dweller, is out hunting for dinner when a coconut falls from a tree and lands on his toe. If the nut fell for 1.4 s, 

how fast was it traveling when it hit Chief Boolie’s toe ?

The forces p and q of magnitude 1500 lbs and 1700 lbs respectively applied to the aircraft connection as shown. Knowing that the connection is equilibrium. Determine the tension s and t

A 3.5 kg rifle fires an 11g bullet with a velocity of 575 m/s. a.) What is the recoil velocity of the rifle. b.) If the shooter holds the rifle firmly against his shoulder,what will be the recoil velocity?

Assume the mass of shooter is 45kg

A 2500 kg delivery truck contains 125 cavans of rice, each of mass 500 kg. Its moving at a speed of 5m/s. How many cavans of rice must be unloaded at a nearby grocery so that the track can move at 9m/s and yet maintain the same momentum( Identify the given, unknown and equation to use.)