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1. A certain lightbulb is rated at 75.0 W when operating at an rms voltage of 120 V.
(a) What is the peak voltage applied across the bulb?
V
(b) What is the resistance of the bulb?
?
(c) Does a 100-W bulb have greater or less resistance than a 75-W bulb?
greater/less
A water balloon slingshot launches its projectiles essentially from ground level at a speed of 25.0m/s, For how many seconds will the balloon be in the air
Calculate the change in the melting point of naphthalene for one atmosphere rise in pressure given that its melting point is 80 C. Latent heat of fusion is 4563 cal/mol and increase in volume on fusion is 18.70 cm3 per mol and 1 calorie = 4.2×10^7..
A proton is released from rest at the positive plate of a parallel-plate capacitor, What will be the proton's final speed if the experiment is repeated with double the amount of charge in each capacitor plate
A Carnot engine absorbs 950J of heat each cycle and provides 340J of work. How much heat is rejected each cycle
Four identical point charges (+3.17nC) are placed at the corners of a rectangle, what is the potential at the geometric center of this rectangle
If linear momentum is conserved when there is no external force applied, how is angular momentum conserved
Two tugboats pull a disabled supertanker. Each tug exerts a constant force of 1.60×106N, What is the total work done by the two tugboats on the supertanker
Two 1.5cm -diameter disks face each other, 2.0mm apar, What launch speed must the proton have to just barely reach the positive disk
The leg and cast weigh 220 N. find out the weight and the angle needed so that no force is exerted on the hip joint by the leg plus the cast.
A car of mass M= 900-kg travelling at 45.0 kmh enters a banked turn covered with ice. The road is banked at an angle, and there is no friction between road and car's tires.
A circular area with a radius of 7.80cm lies in the x-y plane. What is the magnitude of the magnetic flux through this circle due to a uniform magnetic field B = 0.229T that points in the +z direction
A small, 1.90-mm-diameter circular loop with R = 1.40×10?2? is at the center of a large 110-mm-diameter circular loop. What is the induced current in the inner loop
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