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Determine T1 and T2, the tension in the two parts of the string, and (b) find the moment of inertia of the pulley. (118.5 N, 156 N, 1.17 kg.m2)
If the filament of the bulb is a tungsten wire having a radius of 475 μm, what is the magnitude of the current density in the filament?
What voltage does the machine have to apply to the conducting bars to drive a current of 30.0 mA through your body, causing strenuous muscle contraction?
Estimate the change in COP of your electric food freezer when it is removed from your kitchen to its new location in your basement, which is 8 C° cooler than your kitchen. (Assume that the temp
If one observer records a sound level of 60.1 dB and the other records a sound level of 83.1 dB, how far is the speaker from each observer? Enter the longest distance first.
The rms speed of the molecules in 1.0 g of hydrogen gas is 1800 m/s. A) what is the total translational kinetic energy of the gas molecules?
If a metric ton is 1.000 103 kg, how many 72 kg people can safely occupy an elevator that can hold a maximum mass of exactly 1 metric ton?
Find the point between these two charges where a charge of +3.00X10^-9 should be placed so that the net electric force on it is zero.
Two children setup a "telephone" by placing a long, slender aluminum (Y = 6.9 × 1010 N/m2) bar that has a length of 6.1-m between their two houses. To communicate, a child taps a coded messag
Consider a system of three noninteracting identical bosons. Find the energy level and wave functions of the ground state, the first state, and the second state of the system.
The speed of sound is 343 m/s. A sound wave of frequency 5,700 Hz from a distant source strikes a very high fence of total length 20 m with 2.0 cm wide vertical gaps spaced 1.0 cm apart. At what an
suppose you let the mass down onto the spring a certain distance very slowly and observe the mass is not moving at this point. how much did the spring compress?
You are a passenger on a spacecraft. For your comfort, the interior contains air just like that at the surface of the Earth. The craft is coasting through a very empty region of space. That is, a n
Which has a dielectric constant of 2.30 and a dielectric strength of 18 106 V/m. What is the maximum potential difference that this cable can withstand?
Calculate the lime requirement (LR) of a soil in tonnes CaCO3/ha-20 cm given the following results of a LR determination in the laboratory using lime water (Ca(OH)2) where (Ca(OH)2) has a CaCO3 equi
A 4.75 crate is suspended from the end of a short vertical rope of negligible mass. An upward force is applied to the end of the rope, and the height of the crate above its initial position is given
The gravitation attractive force between two masses is F. If the masses are moved to half of their initial distance, what is the gravitational attractive force?
A fuel pump sends gasoline from a car's fuel tank to the engine at a rate of 6.34 10-2 kg/s. The density of the gasoline is 735 kg/m3, and the radius of the fuel line is 3.19 10-3 m. What is the sp
In the absence of any external magnetic field, determine the maximum current a 1.53-mm-diameter niobium wire can carry and remain superconducting.
A bucket of mass 1.90 {rm kg} is whirled in a vertical circle of radius 1.10 {rm m}. At the lowest point of its motion the tension in the rope supporting the bucket is 28.0 {rm N}
A steel beam is suspended completely under water by a cable that is attached to one end of the beam, so it hangs vertically. Another identical beam is also suspended completely under water, but by
If this electron moves a distance of 14.0 cm in this electric field, what is the potential difference between the starting and ending points (identify which is larger)?
A gasoline engine with an efficiency of 40% operates between a high temperature 800K. If it operates with Carnot efficiency, what is the low-side temperature?
The two wire unit is placed at an angle of 78.0° relative to a magnetic field whose magnitude is 0.360 T. The magnitude of the net magnetic force experienced by the two-wire unit is 3.13 N. What
Two cars are traveling on a desert road, as shown below. After 5.0s, they are side by side at the next telephone pole. The distance between the poles is 70.0 m. Identify the following quantities: