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An air puck of mass \(m_{1}\) is tied to a string and allowed to revolve in a circle of radius R on a frictionless horizontal table. determine the radial force acting on the puck
A parallel plate capacitor has a potential difference between the plates of 80 V. what is the electrical energy stored by this capacitor
A string under a tension of 49.0 N is used to whirl a rock in a horizontal circle of radius 2.40 m at a speed of 20.8 m/s on a frictionless surface, What is the breaking strength, in newtons, of the
A bird watcher meanders through the woods, walking 0.496 km due east, 0.754 km due south, find the magnitude (in kilometers) of the bird watcher's displacement.
What is the effective resistance of a parallel combination of a very large resistance and a very small resistance, what will be the current through each resistor
A 1.5-V battery is connected in series with a 3.3-k? resistor, a 4.7-k? resistor, and a 1.0-k? resistor. Calculate the current (in mA) through and the voltage (in V) across each resistor
In the circuit shown in the figure, the 6.0 ohm resistor is consuming energy at a rate of 23.0 J/s, Find the current through the ammeter in amps
A battery provides a voltage of 10.0V and has unknown internal resistance Rint. If the external resistance is then changed to R2 = 7.00? , what is the value of the current I2 in the circuit
A 2000kg car traveling at a speed of 12m/s skids to a halt on wet concrete where ?k = 0.50. How long are the skid marks
Calculate your apparent weight at the top and bottom of a Ferris wheel, given that the radius of the wheel is R meters, it completes one revolution every T seconds
A 0.2kg flying pig toy is attached to the ceiling with a string. When the pig's wings flap, find the angle the string makes with the vertical
A car is towing a boat on a trailer. The driver starts from rest and accelerates to a velocity of +13.2 m/s in a time of 27.9s. What is the tension in the hitch that connects the trailer to the car
A physics TA pushes a 20.0-kg equipment cart at a constant velocity a distance of 24.0 m down the hall. determine the work done by the force of gravity acting on the cart
A 1.00-kg glider attached to a spring with a force constant 16.0 N/m oscillates on a frictionless, horizontal air track. Find the period of the glider's motion
To strech a spring 6.00cm from its unstreched length, 16.0J of work must be done. What is the force constant of this spring
A magnetic dipole consisting of a 10-turn current loop of area of .1m^2, with a current of 1.0A flowing through each turn, What is the magnitude of torque acting on the loop
A child is walking toward a wall at a speed of 1.00m/s in a direction at right angles to the wall. what is the frequency of the whistle
Two forces are applied to a car in an effort to move it, as shown in the following figure, where F1 = 423 N and F2 = 355 N. What is the resultant of these two forces
A woman stands on a scale in a moving elevator. Her mass is 55.0 kg, and the combined mass of the elevator and scale is an additional 755 kg. What does the scale read (in N) during the acceleration
A capacitor consists of a set of two parallel plates of area A separated by a distance d. find the magnitude of the charge on the plates
Two point charges are placed on the y axis as follows: charge q1= -1.50 nC at y= -.600m, What is the net force (magnitude and DIRECTION) exerted by these two charges on a third charge
Determine the escape velocity from the Sun for an object at the Sun's surface (r = 7.5 × 105 km, M = 2.0 × 1030 kg)
We have a small Estes rocket at home that we have taken to a field to launch vertically upward. What is the maximum height of the rocket
A 4.0 ohm resistor is connected in parallel with a 12 ohm resistor and both of these are connected to a DC power supply with voltage V. what is the current through the 4.0 ohm resistor
A clarinetist, setting out for a performance, grabs his 3.19-kg clarinet case (including the clarinet) from the top of the piano, Find the case\'s vertical acceleration