A 4.25-kg block is sent up a ramp inclined at an angle θ = 31.5° from the horizontal. It is given an initial velocity v0 = 15.0 m/s up the ramp. Between the block and the ramp, the coefficient of...
A 4.25-kg block is sent up a ramp inclined at an angle θ = 31.5° from the horizontal. It is given an initial velocity v0 = 15.0 m/s up the ramp. Between the block and the ramp, the coefficient of...
Two girls pull on a cart. One pulls with a force of 25 N, the other with a force of 16 N. In what relative directions can the girls act to give the cart the smallest acceleration? (Answer:...
A soccer ball is tossed vertically upward. If the ball takes 5.20 s to go up and down, what height did it reach? (Answer: 33 m)
An object is launched horizontally at a velocity of 28.0 m/s from the top of a cliff. If the object hit the ground 170.0 m from the base of the cliff, how high is the cliff? (Answer: 1.8 x...
A football is thrown horizontally at a velocity of 9.0 m/s from the top of an 18.0 m cliff. Calculate the distance from the base of the cliff that the object will hit the ground. (Answer:...
A rock is thrown vertically downward and takes 1.56 s to reach the ground. If it travels 23.5 m before reaching the ground, what is its velocity when it strikes the ground? (Answer: 23 m/...
Determine the output voltage for a transformer that has 105 turns in its primary and 486 turns in its secondary. The input voltage is 15.0 volts.
The amount of electric power used by a lamp that has a resistance of 22.0 Ohms and is connected to a 34.0 Volt batter is ____ Watts.
If the velocity of a disturbance in a steel rod is 2000 m/s & the frequency of vibration is 2000 Hz, find a) the time period of oscillation of each particle of the rod b) wavelength of the disturbance...
A small cork with an excess charge of +7.0 µC is placed 0.24 m from another cork, which carries a charge of −3.2 µC. What is the magnitude of the electric force between the corks...
Two families are traveling by car to a camp 280 kilometers away. One family leaves 20 minutes ahead of the other family and travels at an average speed of 40 kilometers per hour. What would the speed...
The initial position is zero and we were given the velocity time graph. The graph has some curves and some straight lines. How do you transition the graphs from velocity:time graph to position: time...
Running Pattern. A sailboat race course consists of four legs defined by the displacement vectors A, B, C and D shown above. The values of the angles are Θ1 = 360, Θ2 = 350, and Θ3 =...
A motorcycle due east at a constant speed covers 75 kilometers in 1.5 hours. what is its velocity in km/h
Two identical loudspeakers emitting the same pure tones (ƒ = 343 Hz) are facing each other at a distance of 10.0 m. If the speed of sound is 343 m/s, the wavelength λ = 1m. An observer positioned...
A bag of sand weighing 144 lbs was lifted at a constant rate to a height of 25 ft. How much work was done by lifting the bag this far if the rope weighs 2 lbs per foot?
A vertical right circular cylindrical tank measures 30 ft high and 20 ft in diameter. It is full of kerosene weighing 51.2 lb/ft^3. How much work does it take to pump the kerosene to the level 4 ft...
What is the main difference between Aristotle and Newton regarding how things move? (What did Aristotle believe to be the cause of motion? What did Newton hypohesize about motion?) Here's...
What are the x & y components of vector E in terms of the angle σ & the magnitude E? For the same vector, what are the x & y components in terms of the angle ø...
A boxer punches a sheet of paper in mid air, and brings it from rest up to a speed of 26 m/s in 0.05 s. If the mass of the paper is 0.001 kg, what force does the boxer exert on it?