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Suppose that a 33-meter length of resistive wire is connected across the terminals of a battery. If a voltmeter reads 52 V when connected across the battery terminals, what should it read when conne
The second wire lies along the x axis. Determine the value of y for the line in the plane of the two wires along which the total magnetic field is zero.
Find the R-factor for each of these layers, and the equivalent R-factor for all layers taken together, retaining two digits.
Determine the minimum value of the coefficient of static friction, as a function of L and D, that will keep the pole horizontal and not allow its end to slide down the wall.
Assume that your maximum metabolic rate (the maximum rate at which your body uses its chemical energy) is 1500 W (about 2.7 hp). Assuming a 40 percent efficiency for the conversion of chemical energ
Each droplet has a radius of 2.0 x 10^-5 m. Find the total surface area of these N spherical droplets.
A negative charge of -3 x10^-6C and a positive charge of 4.0 x10^-6 C are separated by a distance of 3 mm. What is the force on the negative charge? (magnitude and direction). A. what is the force o
A crate is carried in a truck traveling horizontally at 15m/s. If the coefficient of static friction between crate and truck is 0.40, determine the minimum stopping distance for the truck so that th
In elastic collisions,total kinetic energy and momentum are both conserved. On a frictionless track, cart 1 is moving with a constant, rightward (+) velocity of 1.0m/s. Cart 2 is also moving rightwa
A charge of -6.4 mC is at the corner of a cube with 0.45m sides. What is the total flux through the entire surface of the cube?
An observer above the water looks vertically downward at the toy and its image in the mirror. The apparent difference in depth between the toy and its image in the mirror is closest to:
A circuit is constructed with six identical resistors and an ideal battery. When R4 is removed from the circuit the current in the battery decreases by 1.9A. Determine the resistance of each resisto
The stirrer is used to stir the mixture gently until it reaches its final equilibrium temperature of 32°C. Calculate the mass of the aluminum cup.
A uniform magnetic field of magnitude 0.29 T makes an angle of 13 degrees with the plane of a circular loop of wire. The loop has a radius of 1.85 cm. What is the magnetic flux through the loop?
Jupiter is an average distance of 7.78 multiplied by 108 km from the Sun. Estimate the length of the Jovian year given that the Earth is 1.50 multiplied by 108 km from the Sun on the average.
If the command module was at an altitude of about 98 km above the surface of the moon, how long did it take to go around the Moon once?
Your friends respond that they thought gravity was just a lot weaker up there. Convince them and yourself that it isn't so by calculating the acceleration of gravity 575 km above the Earth's surface
In one hand you hold a 0.13-kg apple, in the other hand a 0.23-kg orange. The apple and orange are separated by 1.25 m. What is the magnitude of the force of gravity in the following situations?
Determine the tangential acceleration of the car when it is halfway through the turn (i.e. 1/4 of a circle), assuming constant tangential acceleration.
The coefficient of kinetic friction between the two blocks is 0.300, and the surface on which the 8.00 kg block rests is frictionless. A constant horizontal force of magnitude F=10.0 N is applied to
find the apparent weight of a 54-kg person in the roller coaster as it passes over the top of the hill. The apparent weight is how heavy the person feels, which is determined in this case by the nor
A girl stands on a rotating merry-go-round, 2.3 m from its center. If the girl has a speed of 2.2 m/s, what is the minimum coefficient of static friction between her feet and the merry-go-round that
(a) What is the angular speed (the magnitude of the angular velocity) of this bacterial motor? (b) How long does it take the motor to make one revolution?
A 0.30 kg toy is attached to the end of a horizontal string and rotated in a circle of radius 1.6 m on a frictionless horizontal surface. If the string will break when the tension in it exceeds 56 N
(a) What is the initial angular velocity of the turbine? (b) How much time elapses while the turbine is speeding up?