Daniel

How far from a 35.0 cm focal length lens should you put an object to get an upright image magnified by a factor of 1.72?

A droplet of oil carries an extra charge of one electron and is held motionless between parallel plates separated by 0.92 cm across which there is a potential difference of 58.0 kV. What is the mass of the droplet?

An object whose height is 5.3 cm is at a distance of 8.5 cm from a spherical concave mirror. Its image is real and has a height of 11.1 cm. Calculate the radius of curvature of the mirror.

How far from the mirror is it necessary to place the above object in order to have a virtual image with a height of 11.1 cm?

A laser beam shines vertically upward. What laser power is necessary for this beam to support a flat piece of aluminum foil with mass 27.9 μg and diameter equal to that of the beam? Assume the foil reflects all the light.

Two rays leave a point source and strike a front-silvered mirror, making angles with the normal of 21.5° and 50.5°, respectively. What is the angle between the two reflected rays?

The electric field of an electromagnetic wave is given by; E=4.25 × 102 sin(2.55 × 106 π (x-3.0 ×108 t)) where everything is in SI units. What is the wave's frequency?

(5) A series LCR circuit consists of an inductor of inductance L and resistance r, a capacitor C, a resistor R, and a generator of voltage V. Mark as true or false the following statements concerning the relative phase of V, VL, Vr, VC, and VR.

Vr and VR are in phase.

VL - VC is in phase with Vr.

V is at an angle φ relative to VR.

VC lags VR by 90°.

VL leads VC by 90°

An LC circuit includes a 0.303 μF capacitor and a 412 μH inductor.

(a) If the peak voltage on the capacitor is 147 V, what is the peak current in the inductor?

(b) How long after the voltage peak does the current peak occur?

f(x, y) = 4x + 6y − x2 − y2 + 2,

D = {(x, y) | 0 ≤ x ≤ 4, 0 ≤ y ≤ 5}

absolute maximum value

absolute minimum value

A 400 turn, 3.3 cm diameter coil is in a 667 mT external magnetic field that is perpendicular to the plane of the coil. What is the magnitude of the EMF induced in the coil if the magnetic field falls smoothly to 165 mT in 1.20 s?

A current of 2.45 A is located at the origin, flowing along the z axis. (A positive current flows in the + k direction.) Find the magnetic field at the point (4.05,5.68) cm.

Enter the x and y components of the field:

A copper rod of mass 0.7 kg rests on two rails 0.7 m apart and carries a current of 31 A from one rail to the other. The coefficient of static friction is 0.8. What is the magnitude of the least magnetic field that would cause the bar to slide?

The output of the voltage-divider network shown in the diagram below is to be measured with two different voltmeters, V1 and V2. Consider the situation when V0 = 10.0 V, R1 = 165 Ω, and R2 = 435 Ω.

When the voltmeter V1, whose internal resistance is 4.15 k Ω is placed across R2, what would be the reading on the voltmeter V1?

When the voltmeter V2, whose internal resistance is 1.85 M Ω, is placed across R2, what would be the reading on the voltmeter V2?

http://loncapa.tcc.fl.edu/res/fsu/capalibrary/59Ci...

The diagram below depicts a variable capacitor, such as those that are used in radios. The knob is rotated so that the effective area of the plates can be altered, thus causing variable capacitance. For one such variable capacitor, the capacitance varies from 6.35 × 10-4 F to 6.40 × 10-5 F. The capacitor is charged to a potential difference of 210 V at maximum capacitance and then isolated. At minimum capacitance, what is the voltage?

You need to build an ammeter that can measure up to 0.5 A. You are given a galvanometer that reads 15 μA at its full-scale deflection, and are told that this galvanometer has an internal resistance of 7000 Ω. What value should you choose for the shunt resistor to convert this galvanometer into an ammeter?

You must design a capacitor capable of storing 4.10 × 10-7 C of charge, but you only have a 170- V power supply and two metal plates of area 0.405 m2 each. What is the largest value the plate separation can be so that you can accomplish the task?

A 1.15- μC charge is placed at the center of a cube of sides 6.80 cm. Determine the electric flux through each of the sides.

0.53 moles of an ideal gas, at an initial pressure of 3.50×105 N/m2 and an initial volume of 1.20 l, undergo an isothermal expansion to a volume of 2.80 l. Find the work done by the gas.

You have 1.6 moles of a fictitious ideal gas whose molar specific heat values are Cv = 12.93 J/(mol·K) and Cp = 21.24 J/(mol·K). The gas expands from an initial volume of 0.0205 m3 to a final volume of 0.0370 m3 at a constant pressure of 1.89 atm.

You need to figure out how to do the same thing for a different asteroid that has a mass of 3.26×1019 kg and a radius of 145 km. What speed would a 460 kg mass satellite have if it is in a 222 km radius circular orbit around this asteroid?