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An 1820 kg car passes over a bump in a road that follows the arc of a circle of radius 41.9 m. a) What force does the road exert on the car as the car passes the highest point of the bump if the car t
The dog starts running when the owners are d = 8.0 m apart. If the dog runs with a speed of vd = 3.2 m/s, and the owners each walk with a speed of 1.3 m/s, how far has the dog traveled when the owners
A cheetah can accelerate from rest to 22.0 m/s in 6.76 s. (a) Assuming constant acceleration, how far has the cheetah run in this time?
An uncharged capacitor and a resistor are connected in series to a source of EMF. If ? = 4.68 V, C = 22.6 oF, and R = 135 Ω, calculate the time constant of the circuit. Calculate the maximum cha
New York is roughly 3000 miles from Seattle. When it is 8:00 a.m. in Seattle, it is 11:00 a.m. in New York. Using this information, estimate the following. (a) the rotational speed of the surface of
If I connect a large number of 80.0 oF capacitors in parallel across a 320.0 V battery, how many capacitors do I need to store 331.8 J of energy?
Use the Sackur- Tetrode equation to calculate the entropy of a mole of argon gas at room temperature and atmospheric pressure. Why is the entropy greater than that of a mole of helium under the sam
Calculate the final temperature when 1600g of water at 35oC in a 125g Cu calorimeter is mixed with 128g of steam originally at 143 oC and 450g of ice originally at -35 oC.
For an unpolarized electric field (i.e. the electric field has polarization components both parallel and perpendicular to the plane of incidence) incident on a this glass plane with n = 1.45, at wha
Assuming the resistivity of the Nichrome remains constant at its 20.0°C value, find the length of wire used.
A certain lightbulb has a tungsten filament with a resistance of 17.7 Ω when at 20.0°C and 135 °C when hot. Assume the resistivity of tungsten varies linearly with temperature ev
At what temperature will aluminum have a resistivity that is three times the resistivity of iron at room temperature? (Assume room temperature is 20° C.)
what is the magnitude of the magnetic force acting on the proton?
using Gauss' law, and by direct integration. Do not carry out this last integral; just set it up. Now look at the equality between the integral and the result of Gauss' law, and interpret what it is
a) Compute the net moment exerted at the elbow (E) due to F b) Compute the net moment exerted at the shoulder (S) due to F
how many positive-voltage sources of magnitude less than 9 V can you design? List them in order, smallest first. What is the output resistance (i.e., the Thevenin resistance) of each?
You are given three resistors, each of 10 kQ, and a 9-V battery whose negative terminal is connected to ground. With a voltage divider using some or all of your resistors, how many positive-voltage
A speech signal has a total duration of 20 sec. It is sampled at the rate of 8 kHz and then PCM encoded. The signal-to-quantization noise ratio is required to be 40 dB. The minimum storage capacity
A charged oil droplet falls 4 mm in 18.0 s at terminal speed in the absence of an electric field. The specfic gravity of air is 1.35 multiplied by 10-3, and that of the oil is 0.75. The viscosity o
Calculate the energy of H2 molecule where nx = ny = nz - 10. By comparing this energy to kT with T = 300K, determine whether a classical or quantum mechanical description can be used.
A certain airplane can accelerate on the runway at a rate of 2.5 m/s2 and must attain a speed of 30 m/s in order to take off. What is the minimum length of a runway on which this plane could take of
A ball is thrown straight down from the top of a cliff with a speed of 5 m/s. The cliff-top is 20 m above ground level. Neglect the effects of air resistance. With what speed does the ball strike th
A ball is thrown from atop a cliff with an initial speed of 30 m/s at an angle of 40o above the horizontal. The cliff is 40 m above level ground. Neglect the effects of air resistance.What is the spee
What is the direction of the acceleration? Whats is the mass of the object? If the object is intially at rest, what is the speed after 10.0 s? What are the velocity components of the object after 10