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Determine the magnitude and direction of the net electrostatic force on the charge at x = +3.0 m. Specify the direction relative to the -x axis.
If all this energy is released during a 12.5 hour day, at 78.3 percent efficiency, what is the average power output?
Imagine dropping a soccer ball. The first bounce will be the highest, eand each bounce after that will be lower until the ball stops bouncing. Describe the energy changes that take place and explain
A charge of +q is located at the origin, while an identical charge is located on the x axis at x = 0.46 m. A third charge of +3q is located on the x axis at such a place that the net electrostatic f
The electronic meter of an electric bike indicates that you are riding at 9.1 rad/s. The wheel has a radius of 0.45 m. If you ride the bike for 35 min, how far would you have gone if the bicycle wo
A speedboat (220 kg), making a circular turn (r=32 m) around a bouy. During turn the engine causes a net tangential force of 550 N. The initial tangential speed of the boat was 5 m/s. (a) find the t
Two identical twins A and B are each 20 year old when B starts on a round trip to a star 10 light years away. If he travels at an average speed of 0.99c, What are the ages of the two twins when B re
A solid sphere of weight 36.0 n rolls up an incline at an angle of 30.0. At the bottom of the incline the center of the mass of the sphere has a translational speed of 4.90 m/s. a) what is the kinet
What is the excess charge on a conducting sphere of radius r = 0.37 m if the potential of the sphere is 1625 V and V = 0 at infinity?
An 9.0 m, 220 N uniform ladder rests against a smooth wall. The coefficient of static friction between the ladder and the ground is 0.55, and the ladder makes a 50.0° angle with the ground. How
After being "rubbed", an object has acquired a charge of -1 nanoCoulomb. Choose the statement that is true (only 1): A. 6.25 x 10-9 protons have been rubbed off the object.
Take the potential of the negative plate to be zero. If the potential halfway between the plates is then +10.0 V, what is the electric field in the region between the plates? (Take directly towards
A particle of charge q is fixed at point P, and a second particle of mass m and the same charge q is initially held a distance r1 from P. The second particle is then released. Determine its speed wh
A gas, while expanding under isobaric conditions, does 480 J of work. The pressure of the gas is 160000 Pa, and its initial volume is .0015 m^3. What is the final volume of the gas?
A metal surface with a work function of (W1=3eV) is illuminated with a monochromatic ultraviolet light of frequency v*1. The maximum speed of the ejected photo electrons was found to be v1=0.6x10^6
An electron is projected with an initial speed of 3.9 X10^5 m/s directly toward a proton that is fixed in place. If the electron is initially a great distance from the proton, at what distance from
which does not slip against the road surface. since the wheel does not slip the road must be appplying a force of static friction to the wheel that produces a countertorque. moreover, the car has a
A 1.00 kg glider attached to a spring with a force constant 49.0 N/m oscillates on a horizontal, frictionless air track. At t = 0, the glider is released from rest at x = -3.50 cm. (That is, the spr
Assume that the separation is large enough for us to assume that the charge on each sphere is uniformly distributed (the spheres do not affect each other). Take V = 0 at infinity.(a) Calculate the
Two +1 microCoulomb point charges are located on the x-axis, at x = 2m and at x = -2m. Find the magnitude of the electric field at the origin.
A screen is placed 1m from a single slit which is illuminated with 690 nm light. The slit width is 0.1 mm. What is the distance from the central maximum to the first minimum of the diffraction patte
A 60 W lamp is connected in series with a 12 V emf. How much current (in A) flows through the lamp? Please round the solution to an integer.
A single square loop of wire has a resistance of 2 Ohm. The length of each side of the square is 0.5m. A magnetic field whose direction makes an angle of 45 degrees with the normal to the plane of t
A resistor operated at 100V generates Joule heat at a rate of 20W. When placed across a 220V source, it will draw a current of:
An 8 Ohm speaker is connected across the output terminals of a power amplifier that delivers 72 W. What is he current supplied to the speaker (in A)?