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Eight identical light bulbs are connected in parallel with a 120-V power source, by two long leads with resistance 1.4 Ohms. 210 mA flow through each bulb, What is the resistance of each bulb
what is the thermal kinetic energy in 1kg of oxygen gas at 20 degrees celsius? What fraction of this energy is translational
A 500g model rocket is on a cart that is rolling to the right at a speed of 3.0m/s. The rocket engine, At what horizontal distance left of the hoop should you launch
A weightlifter stands up at constant speed from a squatting position while holding a heavy barbell across his shoulders, Draw a free-body diagram for the weight lifter
A charge of + 2.00nC is uniformly distributed on a ring of radius 10.0cm that lies in the x = 0 plane and is centered at the origin. Find the work required to move the point charge to the origin.
You have a battery marked 6.00 V.When you draw a current of 0.245 A from it, the potential difference between its terminals is 5.13 V
You charge an initially uncharged 79.9-mF capacitor through a 48.1 Ohm resistor by means of a 9.00-V, What is the charge after a long time (coloumbs)
You're convinced the opera is almost over because of the large women singing a loud vibrato, What is the power coming from her voice? All of the sudden 4 more identically loud women come out of nowher
Sound is coming through an open window whose dimensions are 1.1 m x 0.75 m. How much sound energy comes through the window in one hour
A small rope has a linear mass density of 8.00 g/m and is tied to two vertical walls that are separated by three fourths the length of the rope, Find an expression for the speed of a wave on the rop
A 40.0 kg girl and a 8.4 kg sled are on on ice (frection coefficient 0.01) of a frozen lake, draw free body diagrama for the girl and the sled
The electric field on the x-axis due to a point charge fixed at the origin is given by E=(b/x^2)i, Find the magnitude and sign of the point charge
In a football game, a receiver is standing still, having just caught a pass. Before he can move, a tackler, find the mass of the receiver
A particle of charge +14 µC and mass 3.54 10-5 kg is released from rest in a region where there is a constant electric field of +490 N/C
The potential difference across a coil is 11V at an instant when the current through the coil is decreasing at a rate of 38A/s . What is the coil's inductance
The Balmer series in atomic hydrogen is the series of wavelengths emitted by the electron when it makes a transition from an energy level with n > 2 to the n = 2 level, Find the four largest wave
Consider a simple cubic crystal structure with a cube edge a= 3.5x10^-10 m and suppose it is used to scatter 3.10x^-10 m x-rays, Find the Bragg angle theta
A proton having an initial velocity of 18.1i hat bold Mm/s enters a uniform magnetic field of magnitude 0.300 T with a direction perpendicular to the proton's velocity, Determine the distance the pr
The large blade of a helicopter is rotating in a horizontal circle. The length of the blade is 6.64 m, Find the ratio of the centripetal acceleration at the end of the blade to that which exists at a
If the proton is fired at a speed of 3.0×107m/s , what is its closest approach to the surface of the nucleus? Assume the nucleus remains at rest
A galvanometer has an internal resistance of 30?and deflects full scale for a 60??A current, What is the magnitude of this resistor
An infinitely long line of charge has a linear charge density of 6.00×10?12C/m . A proton is at distance 14.5cm from the line, How close does the proton get to the line of charge
Water drives a waterwheel (or turbine) of radius R = 3.0 m as shown in the figure. The water enters at a speed v1 = 6.5m/s, What is the torque the water applies to the waterwheel
A rectangle has a length of 5.50m and a width of 12.0m. What are the perimeter and area of this rectangle
Two identical 1.70kg masses are pressed against opposite ends of a spring of force constant 1.70N/cm, Find the maximum speed of each mass when it has moved free of the spring on a smooth