Home
Ask directory
Physics 101 Mechanics
October 2021
1
Physics 101 Mechanics
Q&A Archive of
October 1, 2021
Select Question
October 1 of 2021
A hockey puck glides across the ice at 32.5 m/s, when a player whacks it with her hockey stick, giving it an acceleration at 64.3? to its original direction. The acceleration lasts 50.3 m/s^2 and the puck’s displacement during this time is 1.76 m. Find the magnitude of the puck’s…
You’re windsurfing at 6.28 m/s when a gust hits, accelerating your sailboard at 0.714 m/s2 at 48.8? to your original direction. If the gust lasts 5.42 s, what’s the magnitude of the board’s displacement during this time?
What is density science
A 60° inclined plane of length 0.3 m is positioned at the edge of a table that is 1 m high. A box is placed at the top of the plane and given a shove so that it has an initial velocity of 2 m/s down the plane. The coefficient of kinetic friction between the block and the plane is μk = 0.8. (a)…
The wheel of a car are locked as it is slide to a stop from an intial speed of 50m/s. If the coefficient of the kinetic friction is .5 and the road is horizonal, approx. how long does it take the car to stop
A rocket is to travel from Earth to a nebula 5.75 ly away. At what speed must the rocket travel in order for the Earth–nebula distance to be 3.10 ly, when measured in the reference frame of the rocket? Express your answer as a multiple of c, the speed of light in a perfect vacuum.
find the celsius temperature corresponding to (a) a winter night in settled 41.0 degree fahrenheit , (b) a hot summer day in palm spring 107.0 degree fahrenheit; (c) a cold winter day in northern manitode -18.0 degree fahrenheit.
Help with this exam style question?
A car is travelling along a straight path with a speed of 40km/h meanwhile, raindrops are falling at constant speed vertically with respect to the Earth. The traces of the rain on the side windows of the car make an angle 30° with the vertical. Find the velocity of the rain with respect to (A)…
A heavy ball with a weight of 100. N ( _m_ = 10.2 kg) is hung from the ceiling of a lecture hall on a 4.50-m-long rope. The ball is pulled to one side and released to swing as a pendulum, reaching a speed of 5.50 m/s as it passes through the lowest point. a) What is the tension in the rope at…
What is the velocity of a rocket that accelerates at 40km/s² for 3.0 minutes?
a machine component is subjected to the forces and couples shown the component is to be held in a place by a single rivet that can resist a force but not a couple. for P=60N
A hockey puck glides across the ice at 32.5 m/s, when a player whacks it with her hockey stick, giving it an acceleration at 64.3? to its original direction. The acceleration lasts 50.3 m/s^2 and the puck’s displacement during this time is 1.76 m. Find the magnitude of the puck’s…
You’re windsurfing at 6.28 m/s when a gust hits, accelerating your sailboard at 0.714 m/s2 at 48.8? to your original direction. If the gust lasts 5.42 s, what’s the magnitude of the board’s displacement during this time?
What is density science
A 60° inclined plane of length 0.3 m is positioned at the edge of a table that is 1 m high. A box is placed at the top of the plane and given a shove so that it has an initial velocity of 2 m/s down the plane. The coefficient of kinetic friction between the block and the plane is μk = 0.8. (a)…
The wheel of a car are locked as it is slide to a stop from an intial speed of 50m/s. If the coefficient of the kinetic friction is .5 and the road is horizonal, approx. how long does it take the car to stop
A rocket is to travel from Earth to a nebula 5.75 ly away. At what speed must the rocket travel in order for the Earth–nebula distance to be 3.10 ly, when measured in the reference frame of the rocket? Express your answer as a multiple of c, the speed of light in a perfect vacuum.
Help with this exam style question?
A heavy ball with a weight of 100. N ( _m_ = 10.2 kg) is hung from the ceiling of a lecture hall on a 4.50-m-long rope. The ball is pulled to one side and released to swing as a pendulum, reaching a speed of 5.50 m/s as it passes through the lowest point. a) What is the tension in the rope at…