Physics Answers

a capacitor that has air between its plates is connected across a potential differences of 12.0 v and stores 48.0 mu c. what is the capacitance of capacitor?

A 6.5 m ladder leans against a wall, making an angle of 60o with the ground. If the foot of the ladder is

push 75 cm closer to the wall in Figure 1, how far will the ladder slide up the wall?

 coil of wire 4 m long has a resistance of 20 2. If its resistivity is 108 x 10*2 m, find its

area of cross-section

A modern digital barometer says that atmospheric pressure is 101.293 kPa and the height of mercury in the barometer is 762.79 mm as shown. What is the absolute pressure of the gas in the bulb of this barometer (in Pa)? [The density of mercury at this temperature is 13534 kg m−3 . In this problem use g = 9.807 m s−2 .]

A brick is dropped from 100 m up. Find its impact velocity and air time

Current of 50A flows to east on stationery wire . A second wire is 1cm below it . How much current must be flowing in the second wire so that doesn't fall due to gravity ? What is the direction of the current ? The mass per unit length of the second wire is 5g/m

a proton moves through a magnetic field of magnitude 2.0 t at a speed of 5.00 x 10⁶ m/s perpendicular to the field. Find a.) the centripetal acceleration and b.) radius of the circular path of proton

A square loop of wire 10.0 cm on a side is in a 1.25 T magnetic field B. What are the maximum and minimum values of flux that can pass through the loop?

A ball mass of 0.2kg strikes on inclined surface and makes angle 60 degree and speed change from 30m/s to 20m/s what is the magnitude of impulse?

Incandescent lightbulbs have a power output rating of 60.0W, while a CFL bulb has a power output rating of 13.0W. Determine the difference in the amount of energy each bulb burns in 1 hour if a CFL is 85% efficient and an incandescent bulb is 65% efficient.