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A black body has a mass of 3.76 kg, specific heat of 2000 J/(kg · C°), surface area of 0.198 m2, emissivity 1.00, and initial temperature 94° C. The surroundings are at a temperature of 19.2° C. Discover the drop in the blackbody's temperature during a 4.95-minuteinterval that would result from heat loss by radiation only.
Rectangular Loop A rectangular loop (area = 0.15m2) turns in a uniform magnetic field, B =0.17 T. When the angle between the field and the normal to the plane of the loop is π/2 rad andincreasing at 0.70 rad/s, what emf is induced in the loop?
The aorta in humans has a diameter of about 1.9 cm and at certain times the blood speed through it is about 60 cm/s. find the Reynolds number for blood flow through the aorta
The radius of a typicalhuman eardrum is about 4.0 mm. Find the energy persecond received by an eardrum when it listens to sound that is atthe threshold of hearing. Find the energy per second receivedby an eardrum when it listens to sound that is a..
A loop of width 0.2m and length 0.8m, and resistance 200ohms is pulled through a magnetic field of 0.4 T at 0.2 m/sec. What is force necessary to pull the loop
A single-turn circular loop of radius 8.00 cm is to produce a field at its center that will just cancel the earth's field of magnitude 0.7G directed at 70 below the horizontal north direction. Find out the current in the loop.
A beam is rotating about its center (like a big fan blade). It has a mass M and a length L. what is expression for the initial moment of inertia of the system before you and your friend fall onto the fan
The mass of the Moon is 7.35 × 10^22 kg, whereas that of Earth is 5.98 × 10^24 kg. The average distance from the center of the Moon to the center of Earth is 384,400 km.
A thin uniform rod (length = 2.01 m, mass = 3.11 kg) is pivoted about a horizontal frictionless pin through one of its ends. What is the angular acceleration of the rod at the instant it is released
a circus clown weighing 170 lbs. is fired from a cannon at 50 degrees above the horizontal. The clown lands in a circular net that has a radius of 15 ft. What was the initial velocity of the clown
an electron gains 5 x 10-16j of kinetic energy when moving from plate a to plate b. what is the electric potential
A uniform disk with a mass of 875 g and radius 17.0 cm is rotating on frictionless bearings with an rotational speed of 18.0 Hz, What is the new rotational speed of the disk
A thermodynamic system undergoes a process in which its internal energy increases by 480 J. find the energy transferred to or from it by heat
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