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A car is going with a constant speed of 15 m/s (about 34 mph) in a school-crossing corner, where the speed limit is 10 m/s (about 22 mph). A police car, stopped at the corner, starts off in pursuit with constant acceleration of 3.0 m/s2. (9 points)
How much time does it take for the police car to catch up this car?
What is the speed of the police car at that point?
What is the distance traveled at that point?
A mass of 20g is attached to a spring, and undergoes simple harmonic motion with a period of T=0.7 s. What is the force constant of the spring
Two identical point charges of q = +1.50 x 10-8 C are separated by a distance of 0.30 m. How much work is done by the electric field force to move
Two ice skaters, with masses of 50.0 kg and 85.0 kg, are at the center of a 60.0 m-diameter circular rink. how long does the lighter skater take to reach the edge
A 120 V (rms) AC power supply that delivers 0.5 A (rms) current is connected to "side 1" of a transformer. what is the peak voltage drop across the first resistor
What percentage of the neutrons would not interact if the concrete slab were made 36.0 cm thick? I know this is 1.305x10^1. B) How many centimeters thick would the concrete need to be so that 18.0 per cent of the neutrons are transmitted?
Besides the traditional colorimetric acid/base indicators, there is another class that doesn't use color, the olfactory acid-base indicators! These compounds smell or don't smell based on their pH and a lot of them are plant-derived compounds
the volume of a gas is decreased by a constant external pressure of 0.200atm, changing from 2.10 litters to 0.58 litters. during this compression
A roller-coaster vehicle has a mass of 506 kg when fully loaded with passengers, If the vehicle has a speed of 19.0 m/s at point A, what is the force of the track on the vehicle at this point
A rocket takes off vertically from the launchpad with no initial velocity but a constant upward acceleration of 2.25 m/s2. What is the maximum height the rocket will reach above the launchpad
A typical AAA battery has stored energy of about 3400 J. (Battery capacity is typically listed as 625 mA h, meaning that much charge can be delivered at approximately 1.5 V.) what must the area of each plate be
A Carnot engine uses reservoirs at temperatures of 27.0°C and 327°C. In one cycle, it uses 600 J of heat from the high temperature reservoir
An insulating membrane separates conducting fluids inside and outside an unmyelinated axon, a type of nerve fiber. Find the surface area and capacitance of the axon
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