What is the magnetic field in air 0.05 m away from a long straight wire carrying current of 15A? An air-core solenoid with 2000 loops is 0.60 m long and has a...

What is the magnetic field in air 0.05 m away from a long straight wire carrying current of 15A? An air-core solenoid with 2000 loops is 0.60 m long and has a...

An 0.050 m long wire carrying current of 30 A is placed in a uniform magnetic field, B = 0.80 T, such that the wire is oriented so it's length runs perpendicular to the field. Find the magnitude...

An electric motor rotating a workshop grinding wheel at a rate of 212 rev/min is switched off. Assume constant angular deceleration of magnitude 2.94 rad/s 2 . Through how many revolutions does the...

calculate sine waves

A 10 µC charge is at the origin. A -5 µC charge is on the x-axis 10 cm to the right of the origin. At what point other than at infinity can a 1 µC charge be placed so that there will be no net electrostatic...

when do I use the absolute value brackets on the point charge? E = k (q)/r^2 vs E = k |q|/r^2 ?

A musical instrument has an open/closed air tube which is 32 cm long. If the speed of sound in air is 350 m/s then find the fundamental frequency for this instrument. Give your answer ... in terms...

On a stringed instrument, the n=3 harmonic gives a frequency of 419 Hz. The length of the string is 0.48 meters. Find the wave-speed on this string. in terms of meters/second. to...

A 1.5 tonne car travelling at 100km/h suddenly brakes. The brakes provide an overall force of 50 times the normal reaction. Calculate the acceleration of the car.

The figure shows a thin rod of length L and charge Q. (Figure 1) Part A Find an expression for the electric potential a distance x away from the center of the rod on the axis of the rod...

The sodium lamp used in a physics laboratory gives out light uniformly. Suppose that the lamp uses 40 W. Calculate the magnitude of electric field?

It ask you how many seconds are there in 1 year

Two charges q1 = −3.20 nC and q2 = +8.15 nC are at a distance of 1.28 µm from each other. q1 is fixed at its location while q2 is released from rest. (a) What is the kinetic energy of...

A) A proton is fired from far away toward the nucleus of a mercury atom. Mercury is element number 80, and the diameter of the nucleus is 14.0 fm. If the proton is fired at a speed...

Part a is as follows: A long cylindrical insulator has a uniform charge density of 1.89 μC/m3 and a radius of 5 cm. What is the electric field inside the insulator at a distance of 4 cm?...

A dolphin hears a 280 kHz sound with a wavelength of 0.51 cm. What is the wave's speed

1.If the rock were thrown from a cliff of height H' = 2H, the rock would land at a distance D' from the base of the cliff. Compare D and D'. D' = sqrt(2)D D' = 2D D' = 4D 2...

Suppose you are deep sea diving and you start to wonder if the speed of sound in water is different at these depths. You sing a perfect tone of 360 Hz into a tube, and through some measurements determine...

On a very wet and slippery rugby field a 120 kg halfback tackles a 90 kg second rower. Prior to the collision the halfback is slipping with a velocity of 5.6m/s south and the second rower is sliding...

A car of 1 tonne travels at a speed of 100km/h collides with a 3 tonne van travelling 20km/h in the same direction. After the collision the car rebounds at 20km/h. Calculate the impulse on the van...

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