Author: Bruce Simons

a 1200-kg car moving on a horizontal surface has speed v=85

Physics

a 1200-kg car moving on a horizontal surface has speed v=85

Posted By Bruce Simons

a 1200-kg car moving on a horizontal surface has speed v=85 km/h when it strikes a horizontal coiled spring and is brought to rest in a distance of 2.2 m. What is the spring stiffness constant of the spring?

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A thin, circular disk of radius 30.0 cm is oriented in the y

Physics

A thin, circular disk of radius 30.0 cm is oriented in the y

Posted By Bruce Simons

A thin, circular disk of radius 30.0 cm is oriented in the yz-plane with its center at the origin. The disk carries a total charge of +3.00 μC distributed uniformly over its surface. Calculate the magnitude of the electric field due to the disk at

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The flash unit in a camera uses a special circuit to “step u

Physics

The flash unit in a camera uses a special circuit to “step u

Posted By Bruce Simons

The flash unit in a camera uses a special circuit to “step up” the 3.0 V from the batteries to 360 V , which charges a capacitor. The capacitor is then discharged through a flashlamp. The discharge takes 12 μs , and the average power

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When using a double slit with light of wavelength 550 nm, it

Physics

When using a double slit with light of wavelength 550 nm, it

Posted By Bruce Simons

When using a double slit with light of wavelength 550 nm, it is observed that the 4-th order maximum of the interference pattern occurs at the positions of the first minimum in the diffraction pattern. If the width of the slits is 0.39 mm, what

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A homemade capacitor is made from a sandwich of a piece of p

Physics

A homemade capacitor is made from a sandwich of a piece of p

Posted By Bruce Simons

A homemade capacitor is made from a sandwich of a piece of paper (7.0 in. by 13 in., 0.0033 in. thick) between two equal area sheets of aluminum foil.

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Three equal negative point charges are placed at three of th

Physics

Three equal negative point charges are placed at three of th

Posted By Bruce Simons

Three equal negative point charges are placed at three of the corners of a square of side d. What is the magnitude of the net electric field at the center of the square? (k=1/4πϵ0=8.99×109N⋅m2/C2 )

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three point charges lie along the x axis as shown in the fig

Physics

three point charges lie along the x axis as shown in the fig

Posted By Bruce Simons

three point charges lie along the x axis as shown in the figure (no figure was given). the positive charge q1=15 mc is at x=2 m, the positive charge q2 =6 mc is at the origin, and the resultant force acting on q3 is 0.

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When driven by a 124 Hz vibrator, a string has transverse wa

Physics

When driven by a 124 Hz vibrator, a string has transverse wa

Posted By Bruce Simons

When driven by a 124 Hz vibrator, a string has transverse waves of 26 cm wavelength travelling along it.

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A box is on the ramp of a parked moving-truck that forms an

Physics

A box is on the ramp of a parked moving-truck that forms an

Posted By Bruce Simons

A box is on the ramp of a parked moving-truck that forms an angle = 33 degrees with the horizontal. You are currently pushing horizontally (relative to Earth) on the box with a force Fyb=479 N to keep it from sliding down. The mass of

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An AC power source has an rms voltage of 2.30 ✕ 10 2 V and

Physics

An AC power source has an rms voltage of 2.30 ✕ 10 2 V and

Posted By Bruce Simons

An AC power source has an rms voltage of 2.30 ✕ 10 2 V and operates at a frequency of 50 Hz. If a series RLC circuit is made from the power source, a 0.820 μF capacitor, a 11.0 H inductor and a 1.70 ✕

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