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1.Refer to the graph and answer the following questions:
· When does the object have a positive acceleration?
· When does the object have a negative acceleration?
· Graph the position and acceleration curves. Assume the object starts at so = 0 m
2. A frictionless cart with a person in it is released from rest at the top of an inclined plane. The plane is inclined 30o. Find the distance the cart travels in 3 seconds. Show the graph for position, velocity and acceleration.
3. Consider the same scenario as question 2. After 5 seconds have passed, a safety mechanism is activated by the person in the cart. This mechanism slows down the cart until a complete stop. The brakes on the cart provide a deceleration of 6.9?? when ??2 the cart is not on an inclined surface. Calculate the necessary distance for the cart to come to a complete stop and the total distance the cart traveled. Show the graph from the moment the cart was released until it came to a complete stop.
A string of length L is clamped at both ends. When it is plucked, it oscillates by a wavelength that is 2L/3. There are three points on the string and excluding the ends, which remain motionless at all times. There are two points on the string and ex..
A 180 g copper bowl contains 185 g of water, both at 20.0°C. A very hot 300 gcopper cylinder is dropped into the water, causing the water toboil, with 4.80 g being converted tosteam. The final temperature of the system is 100°C. Neglectenergy tran..
The exhaust fan on a typical kitchen stove pulls 600 CFM (cubic feet per minute) through the filter. how many cubic meters per second does this fan pull
Suppose that suddenly the angular velocity of the moon wa about the earth quadrupled. Assuming conservation of angular omentum the distance between the earth and the moon must have suddenly doubled.
question white light is spread out into its spectral components by a diffraction grating. if the grating has 1990 lines
A car with mass 2000.0kg is moving from rest with acceleration 0.50m/s^2. What is its speed after 4.0s of motion? What is its kinetic energy at that instant of time
The particles in the nucleus of an atom are approximately 1.00×10?15 apart, while the electrons in an atom are about 1.00×10?10 from the nucleus. How many pounds would the force be
A long solenoid has 231 turns in a length of 13 cm, radius of 1.8 cm, and I= 1.3 A. Find the magnitude of the average induced emf in the coil
There are three masses arranged on the vertexes of an equilateral triangle with side L. what is the speed of each mass at infinity
An alpha particle is fixed at the origin of coordinates. A neutral sodium atom is fixed at the position \mu m. Be sure to show all of your work and reasoning in your solutions to this problem. What is the value of the electric field at the position ..
Oil is being loaded into a barge through a 150 mm diameter pipe whose exit is at an angle ? = 60? to the horizontal. Determine the force exerted by the barge on the rope
A point charge, q1 = +2C, is placed at the origin (0m,0m), a second point charge, q2 = -3C, is located at (2m, 0m), and a third point charge, q3 = -4C, is located at (0m, 3m)
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