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The rate of heat conduction out of a window on a winter day is rapid enough to chill the air next to it. To see just how rapidly windows conduct heat, calculate the rate of conduction in watts through a 2.50 m2 window that is 0.605 cm thick if the temperatures of the inner and outer surfaces are 5.00oC and -10.0o, respectively. This rapid rate will not be maintained - the inner surface will cool, and frost may even form. give answer in watts.
youre an engineer designing kitchen appliances and youre working on a two-speed food blender with 3700 rpm and 2200 rpm
Two identical point charges are fixed at opposite corners of a square whose sides have a length of A test charge, Determine the speed of the test charge when it reaches the center of the square
A block is hung by a string from the inside roof of a car. When the car goes straight ahead at a speed of 34 m/s, the block hangs vertically down. Find angle θ that the string makes with the vertical
A funny car accelerates from rest through a measured track distance in time T with the engine operating at a constant power P. what is the change in the time required for the run
A 7.00 uF capacitor is initially charged to a potential of 16.0V. What is the total energy stored in this circuit
A mass connected to a horizontal spring sits on a frictionlesstable. The mass is moved to compress the spring, and the system isreleased from rest. What happens to the energy initially stored inthe spring?
What is the minimum coefficient of statistic friction between the tires and the track that will maintain this situation? If the tiles have a radius of 1.2m, what is the angular velocity of the tire? How many rotations do the tiles make on a single..
Two stars in a binary system orbit around their center of mass. The centers of the two stars are 7.30*1011 m apart. The largerof the two stars has a mass of 3.40*1030 kg, and its centeris 2.50*1011 m from the system'scenter of mass.
A mass attached to a spring is lifted 10cm and then let go at which point the mass bobs up and down completing 4 oscillations in 10 sec. When does the mass first reach its maximum speed and what is that speed?
A stone is thrown up at an angle 34.7° above horizontal rind 5.41s later; it reaches the highest point of its trajectory. What is the magnitude of the launching velocity
A bat hits a moving baseball. If the bat delivers a net eastward impulse of 1.3 N-s and the ball starts with an initial horizontal velocity of 3.8 m/s to the west and leaves with a 5.1 m/s velocity to the east
a 5000kg rocket takes off from the surface of the earth with an initial speed of 20m/s. determine the acceleration of the rocket
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