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Aluminum wiring rated at 30. A maximum current is to be installed in a home. how thick diameter does the wire have to be
a fully charged 12.0 volt car battery rated at 850 amp hours is connected to a spotlight rated at 150 watts for 12 volts. what current soed the spot operate on
A capacitor has parallel metal plates of dimensions 12 cm *24 cm seperated by an air gap of .750 mm. find how much energy is stored in the capacitor
If the first-order maximum for pure wavelength light falling on a double slit is at an angle of 10.0 degrees, What is the angle of the first minimum
A constant 0.28 T magnetic field passes through a loop at an angle of 35 degrees with respect to the normal of the area of the loop. find the flux through the loop
In a long solenoid, the density of the wire is 180 turns/cm. find the strength of the magnetic field within the solenoid
Two long, parallel wires carry currents of 0.245 A in the same direction. If the wires are 0.034 m apart, what is the force per unit length between the wires
A 0.25 m segment of wire lies along the x-axis and carries a current of 4.7 A in the negative x direction. What is the force (magnitude and direction) on the segment of wire
If the charge is 23 mu/C, the velocity is 1500 m/s, find the force (magnitude and direction) on the charge.
The Earth (5.98 x 10^24 kg) and the Moon (7.35 x 10^22) kg are separated by an average distance of 3.84 x 10^8 m
The first mass M (9.50 kg) is sitting on an inclined plane whose angle above the horizontal is 35 degrees. What is the minimum mass, m, in kg, needed to keep the block from sliding down the incline
Astronomers have observed a planet orbiting a near-by star. Through close observation, What is the velocity at apogee, in km/s, for the planet
What is the minimum coefficient of static friction between the road and the tires on a car for the car to go around a flat curve at 45.0 mph
A mass M is suspended using two cables which make angles of theta_1 and theta_2 with the horizontal across the top. What is the tension (T_1) in the left-handed cable
A 0.250 kg ball attached to a string s being swung in a vertical circle, What is the minimum speed at the top of the circle to keep the string from going slack
An elevator cable breaks when a 975 kg elevator is 24.5 m above the top of a huge spring (k = 8.00 x 10^4 N/m) at the bottom of the shaft. Calculate the amount the spring compresses
a thin rod has a length of 0.25m and rotates in a circle on a frictionless tabletop. The axis is perpendicular to the length of the rod at one of its ends. what is the angular velocity
A 6.30 kg block is pushed 9.45 m up a smooth 40 degree inclined plane by a horizontal force of 70 degrees north. Calculate the work done by the normal foce
How much work is done by the horizontal force F_p = 150 N on the 18 kg block of the figure when the force pushes the block 5.5 m up along the 32 degree frictionless incline
Sunlight shines directly on to the wall of a large soap bubble (n = 1.33) which is floating in air (n=1). What is the minimum thickness it could have to produce completely destructive interference for
In a lightening bolt, current travels upward, from ground to cloud.Suppose that at the moment that a 35,000, what is the magnitude and direction of the magnetic force on the airplane
Animals in cold climates often depend on two layers of insulation: a layer of body fat [of thermal conductivity 0.200 W/(m*K)], How thick should the air layer (contained within the fur) be so that the
A 0.21-kg pinecone falls 15 m to the ground, where it lands with a speed of 9 m/s, How much work was done on the pine cone by air resistance
A curved plate of mass M is placed on the horizontal, frictionless plane as shown. How high the puck will shoot up from the plate
A 51.0 kg crate, starting from rest, is pulled across a floor with a constant horizontal force of 235 N. What is the final speed of the crate after being pulled these 22.5 m