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A piece of nichrome wire is embedded into a 1-kg block of ice at -10°C. A current of 3.0 amperes and a voltage of 12 volts is maintained in the wire. How long will it take to separate the wire from the ice?
suppose that the displacement of your hand is 0.70 m as you throw the ball straight up. How long is the ball is in your hand.
A 2.40 H coil with a resistance of 3.95×10^2 Ohm is in series with a 4.86×10^3 Ohm resistor. What is the peak value of the potential difference across the coil
Find the moment of inertia of the plate for an axis that lies in the plane of the plate, passes through the center of the plate, and is perpendicular to the axis in part A
Suppose a 1-meter-long bare expands 0.5 centimeters when heated. by how much will a 100-meter-long bar of the same material expand when similarly heated?
A coal power plant with 30% efficiency burns 10 million kilogramsof coal a day. (take the heat of combustion of coal to be 30MJ/kg) At what rate is thermal energy being discarded by this plant?
A solid disk of radius 1.60 m and mass 2.30 kg rolls without slipping to the bottom of an inclined plane. If the angular velocity of the disk is 4.27 rad/s at the bottom, what is the height of the inclined plane
Two thin rods of length L lie along the x-axis, one between x=a/2 and x=a/2+L and the other between x= - a/2 and x= - a/2 - L. Each rod has positive charge Q distributed uniformly along its length.
Calculate the acceleration of an electron that moves through the same magnetic field as in the example, as the same velocity as the proton
Resistances of 2.9 ?, 4.5 ?, and 6.8 ? and a 17.1 V battery are all in series. Find the potential difference across the first (2.9 ?) resistor.
Water flowing in a horizontal pipe is at a pressure of 1.55 105 Pa at a point where its cross-sectional area is 6.00 m2. Find the water's speed in the wider pipe
Suppose two vectors each have length 3.0 units. if the two vectors are perpendicular to each other, what is the resultant vector length
a penny is sitting on the edge of an old phonograph disk that is spinning at 45 rpm and has a diameter of 6.5 inches.
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