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A car starts from rest and moves around a circular, horizontal,level track of radius 30.0 m. Its speed increases at the constantrate of 0.500 m/s2. (a) What is the magnitude ofthe net acceleration 15.0 s later? (b) What angle does the net acceleration make with the car's velocity at this time?
An electron with an initial speed of 4.90×105m/s is brought to rest by an electric field. What was the potential difference that stopped the electron
Betty Bodycheck (mB = 54.7 kg, vB = 22.0 km/h in the positive x-direction) and Sally Slasher (mS = 42.4 kg, vS = 28.0 km/h in the positive y-direction) are both racing to get to a hockey puck. Find both Betty's and Sally's Kinetic Energies
A virtual image is formed 22.0 cm from a concave mirror having a radius of curvature of 30.5 cm. compute the position of the object
A 100 arrow is shot perpendicularly from a bow whose effective spring constant is 500. If the bow is drawn 75 before shooting the arrow, to what height does arrow rise.
A tall, slender drinking glass with a thin base is initially empty. Where is the center of mass of the glass
A laser pointer has a beam intensity of 36 W/m2 and a beam radius of 2.4 mm. A first grader attempts to use it to move a black toy car. what is the force on the car
What would be rockets speed after travelling the distance if it weren't tied down to the spring.
A large window measures 1.8m by 3.2m . At what rate will heat be conducted through the window when the room temperature is 27C and the outside temperature is 0C if the window consists of a single pane of glass 4.4mm thick. (Assume that there is a con..
A system undergoes a 2-step process. In the first step, the internal energy of the system increases by 228J when 166J of work is done on the system. What type of process is the overall process
A series RCL circuit contains a 30-mH inductor, 1.20-?F capacitor, and 150-? resistor. The rms voltage of the generator is 40.0 V and the generator has a frequency of 500 Hz. Determine the rms current in the circuit.
If alpha particles are caused to fall through a potential difference of 1500 volts, determine their final speed if they were initially at rest. An alpha particle has mass 6.68*10^-27kg and charge of +2e. Alpha particles are Helium nuclei.
Electrons are accelerated by a potential and directed upon a thin salt crystal that has inter-atomic spacing of 0.282 cm. What was the acceleration potential
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