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You throw a ball with a speed of 25m/s at an angle of 40.0° above the horizontal directly toward awall. The wall is 22.0 m from the release point of the ball.
a) How long does the ball take to reach the wall?
b) How far above the release point does the ball hit the wall?
c) What are the horizontal and vertical components of its velocity as it hits the wall?
2000 kg elevator is accelerated uniformly from rest to 4 m/s in a time of 90s. find the change in mechanical energy of the elevator
Two point particles with masses m and 4m are placed along the x-axis at x = - a, Calculate the gravitational field and gravitational potential at x = 0
2 moles of ideal gas are kept at 57C while it expands to twice its volume. The work done by the gas = 3.8 kJ What is the change in entropy of the gas
Four point charges have the same magnitude of 2.4 X 10^-12 C and are fixed to the corners of a square that is 4.0 cm on a side. Determine the magnitude of the net electric field
A 85.6-kg wrecking ball hangs from a uniform heavy-duty chain having a mass of 27.0kg, Find the maximum tension in the chain
According to recent test data, an automobile travels 0.250 mi in 19.9 s, starting from rest. The same car, when braking from 60.0 mi/h on dry pavement, stops in 146 ft. Find the acceleration of this car when it is speeding up
A standard 100 W (120 V) lightbulb contains a 9.40 cm-long tungsten filament. The high-temperature resistivity of tungsten is 9.0*10^-7Om. What is the diameter of the filament?
Two electrodes are placed in a calcium chloride solution and a potential difference is maintained between them. what is the current in the solution
A convex mirror has a focal length of %u221219 cm. Where is the image if the image is upright and one-half the size of the object
The total kinetic energy in one mole of an ideal gas is 4,000 J. If the gas is nitrogen, what is the root mean square velocity of an individual particle in the ideal gas
in this assignment you will apply key concepts covered in the module readings. you will identify the component parts
Two mirrors are at an angle of 45 degrees to each other. A light beam strikes the bottom mirror (which is horizontal) at an angle of 60 degrees: At what angle theta is it reflected from the second mirror
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