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The police at the scene of the accident note that the point of impact is 167 m from the base of the cliff. How fast was the car traveling when it drove off the cliff?
Compare and contrast electric charge and mass. Address each of the four properties discussed in class. For mass, only consider chemical reactions (no nuclear reactions).
The crate has a magnitude of 110.0 N. If the crate starts from rest, how fast will it be moving after the man has pulled it a distance of 2.10 m?
A massless stick of length L is pivoted at one end and has a mass m attached to its other end. It is held in a horizontal position. Where should a second mass m be attached to the stick, so that th
Assume both animals, when moving, move steadily at their respective speeds. How far is the tortoise from the finish line when the hare resumes the race?
Two long parallel wires are 8.0 cm apart. What equal currents must be in the wires if the magnetic field halfway between them is to have magnitude of 300 uT. Consider both (a) parallel and (b) anti
A robot probe drops a camera off the rim of a 489 m high cliff on Mars, where the free-fall acceleration is 3.7 m/s2. Find the velocity with which it hits the ground.
The pilot notices that they have covered only 122 km and their direction is not south but southeast (45.0 degrees). What is the wind velocity (magnitude)? What is the wind velocity (direction)?
Find an expression, in terms of their thermal conductivities k, for the ratio of the heat trans-fer through wire 1 over that through wire 2. (b) If material A is Aluminum and material C is copper, c
The plates of a parallel-plate capacitor in vacuum are 25 micrometer apart and 88 square cm in area. Potential difference of 890V is applied across the capacitor. Calculate following:
How many coulombs of unbalanced charge does each hand contain? What force would the person's arms have to exert on his hands to prevent them from flying off?
What is the final temperature when .032 kg of milk at 11°cis added to .16 kg of coffee at 91°c? Assume the specific heat capacity of the two liquids are the sane as water and disregard any
A 27 kg chair initially at rest on a horizontal floor requires a 377 N horizontal force to set it in motion. What is the coefficient of static friction between the chair and the floor?
The ink drops have a mass m = 1.00×10-11kg each and leave the nozzle and travel horizontally toward the paper at velocity v = 24.0m/s . The drops pass through a charging unit that gives each d
If a force is applied perpendicular to the direction of the momentum of an object, what happens to the magnitude of the momentum? Does it increase? Decrease? Stay the same?
A rectangular file cabinet has a height of 71.1 cm, a width of 38.1 cm, and a length of 48.2 cm. Express its volume in scientific notation. Give your answer in units of cubic centimeters (cm3 ).
A bolt comes loose from underneath an elevator that is moving upward at a speed of 7 m/s. The bolt reaches the bottom of the elevator shaft in 3.5 s.
A student has a mass of 90.0 kg, and the height of the water slide is 13.6 m. The kinetic frictional force does -6.30 103 J of work on the student. What is the student's final velocity?
A speedboat starts from rest and accelerates at +2.01 m/s2 for 7.10 s. At the end of this time, the boat continues for an additional 6.35 s with an acceleration of +0.518 m/s2. Following this, the
The coefficient of kinetic friction is 0.30. a) Draw a free body diagram showing the forces on the crate if the conveyor belt runs at constant speed.
A stone is dropped into a river from a bridge at a height h above the water. Another stone is thrown vertically down at a time t after the first is dropped. Both stones strike the water at the same
Is the two buckets are pulled upward with an acceleration of 1.6 m/s/s by the upper cord, calculate the tension in each cord.
So my question is in our physics lab each member in our group measured the dimensions and mass of a block multiple times. I wanted to know what are the advantages of making multiple measurements?
The rock brushes against the uppermost leaves and then falls back to the ground. If the rock is in the air for 2.3 s, how tall is the tree?
An air-track glider attached to a spring oscillates with a period of 1.50s . At t=0s the glider is 5.60cm left of the equilibrium position and moving to the right at 40.6cm/s .