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Suppose a cart was given a push down a ramp, starting at the end close to the motion detector, Describe what the acceleration vs. time graph will look like for this case, and compare it to the case where it will move up the ramp. Explain why the two graphs would be the same or different.
Dan is gliding on his skateboard at 4 m/s. He suddenly jumps backward off the skateboard, kicking the skateboard forward at 6 m/s (as measured by an observer on the ground). Dan's mass is 50 kg and the skateboard's mass is 7 kg. How fast is Dan going..
A garden plot must have a central planting area of length 13 m and width 8 m. There is to be a sidewalk around its edge of width w. If the total area, planting area plus sidewalk area, is 150 m^2, what is the sidewalk width w in meters.
A generating station is producing 2.00 106 W of power that is to be sent to a small town located 8.0 km away. Find the power used to heat the wires if the power is transmitted at 1300 V
When a signal of intensity 3.0kWm-2 is applied at the input of an amplifier of length 10m, the output signal intensity is 36kWm-2. When the input intensity is reduced to 1.0kWm-2 the output is 20kWm-2.
Two moles of an ideal gas are placed in a container whose volume is 9.1 multiply.gif 10-3 m3. What is the average translational kinetic energy of a molecule of the gas
In a mall, a shopper rides up an escalator between floors. At the top of the escalator, the shopper turns right and walks 11.42 m to a store. At what angle is the escalator inclined above the horizontal
Measurements of the radioactivity of a certain isotope tell you that the decay rate decreases from 8305decays per minute to 3080 decays per minute over a period of 5.00 days
Consider a 0.200kg pendulum bob that is in an upright circular cylinder with a 0.0193 diameter, Draw a free body diagram and calculate the tension and the centripital acceleration at the bottom of the pendulum's swing
Two grapes are given equal charges and held apart at a distance of 2.0 m. Find the magnitude of the charge on each grape
question1a jet plane lands with a velocity of 112 ms and can accelerate at an utmost rate of -5.50 ms2 as it comes to
in a hurricane, the air (density 1.2kg/m3) is blowing over the roof of a house at a speed of 104km/hr. what is the lifting force on the roof of area 100m2
A 599 Hz sound wave travels through a substance. What is the speed of sound in the substance
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