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Find the position and velocity of a particle at t = 2.02 s if the particle is initially moving east at a speed of 21.6 m/s and experiences an acceleration of magnitude 3.96 m/s2, directed west.
A charge Q is transferred from an initially uncharged plastic ball to an identical ball 17 cm away. The force of attraction is then 68nM . How many electrons were transferred from one ball to the ot
Find the location of the place(s) along the x axis where the electric field due to these two charges is zero. (Enter the locations in order from -x to +x. If there is only one location, enter 0 in t
A small drain plug with a cross-sectional area of 4.0 x 10^-5 m^2 is located 5.0 m from the bottom of the tank. The plug breaks loose from the tank, and water flows from the drain. (a) Calculate th
Two gas cylinders are identical. One contains the monatomic gas neon (Ne), and the other contains an equal mass of the monatomic gas radon (Rn).
A longitudinal standing wave is established in a tube open at one end only. In air, the fundamental frequency is 110 Hz. What is the frequency of the 3rd harmonic when helium fills the tube? Take th
A charge of -5.0 mC is rigidly held on the x-axis at x = 4.3 m. Find the work (in Joules) done bringing a -10.0 mC particle in from infinity to x = 4.6 m. Please show your work.
If an electron moved from a location with 10.0V potential to a location with a 25.0V potential, would its potential energy increase or decrease? Explain.
A lever is used to lift a heavy load. When a 40 N force pushes one end of the lever down 2.2 m, the load rises 0.8 m. Calculate the weight of the load.
A uniform rod is resting on a frictionless table when it is suddenly struck at one end by a sharp horizontal blow in a direction perpendicular to the rod. The mass of the rod is M and the magnitude
An object has initial velocity in the upward direction, a final velocity in the downward direction and undergoes constant acceleration. What can you say about it's average acceleration?
Find the angular wave number, period, angular frequency, and wave speed of the wave.
A driver traveling at 59 km/h sees a chicken dash out onto the road and slams on the brakes. Accelerating at -7 m/s2, the car stops just in time 22.7 m down the road. What was the driver's reaction
A flow of water travels through a large pipe. In the water are pellets of plastic which float to the top, and smaller shards of plastic that flow throughout (basically don't float).
The ball leaves the student's hand with a speed of 12.0 when the hand is 2.20 above the ground. How long is the ball in the air before it hits the ground?
(a) Find the electric flux through each of the six faces of the cube. (b) Add the six values obtained in part (a) to show that the electric flux through the cubical surface is zero, as Gauss' law pr
Four lightweight balls A, B, C, and D are suspended by threads. Ball A has been touched by a plastic rod that was rubbed with wool. When the balls are brought close together, without touching, the f
A block weighing 100lbs rests on a rough level plane. The coefficient of friction is between the block and the plane is 0.42. what inclined push 45 degrees from the horizontal will cause the block t
Consider a simple harmonic oscillator. Calculate the time averages of the kinetic and potential energies over one cycle, and show that these quantities are equal.
Assuming he jumps off just before the truck's front reaches a pole, how many poles are between Bond and the truck when Bond jumps off?
Write down the equation of motion of the block and also the equation of motion of the sphere, each in terms of T and a?
Write down separate equations of motion for box a and box b? Calculate the acceleration and the tension in the wire?
A charge (uniform linear density = 7.60 nC/m) lies on a string that is stretched along an x axis from x = 0 to x = 2.00 m. Determine that magnitude of the electric field at x = 5.80 m on the x axis.
The mass above it is held to the ceiling with a string, whose tension is 0.1 N. The masses are 1.4 m apart. What is the charge on the upper sphere (and make sure you get the sign right)?
A steel washer is suspended inside an empty shipping crate from a light string attached to the top of the crate. The crate slides down a long ramp that is inclined at an angle of 39 degree above the