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A black body has a mass of 3.76 kg, specific heat of 2000 J/(kg· C°), surface area of 0.214 m2, emissivity 1.00, and initial temperature 99° C. The surroundings are at a temperature of 18.6° C. Discover the drop in the black body's temperature through a 4.55-minute interval that would result from heat loss by radiation only.
The motion of a particle is given by x(t) = (25cm)cos(15t), where t is in s. At what time is the kinetic energy twice the potential energy
at some instant the velocity components of an electron moving between two charged parallel plates are vx 1.10 x 105 ms
The drawing shows a set of equipotential surfaces seen incross-sections. Each is labeled according to its electricpotential. A 4.3 x 10-7 C point charge is placed atposition A.
A 25 kilogram boy on a playground swing moves with a speed of 4.5 m/s when the 3.0 meter long swing is at its lowest point. Find the angle that the swing makes with the vertical when the boy is at the highest point
A wheel starts at rest and takes 3.00 s to rotate 37.0 revolutions at which point its angular velocity is 98.0 rad/s. What is the constant angular acceleration of the wheel
For the differential rod worth data given below, a. Construct differential and integral rod worth curves. b. Using the integral rod worth curve (from Part a), find the reactivity inserted by moving the rod from 6 inches withdrawn out to 12 inches ..
You have to do 2.2 kJ of work to push a 78-kg trunk 3.1 m along a slope inclined upward at 22 degrees , What is the coefficient of friction between trunk and slope
Given two stars, one emits light with a peak wavelength at 400nm (deep blue to your eye) and one emits with a peak wavelength at 600nm (red). Obtain the temperature of each star
romeo is chucking pebbles gently up to juliets window and he wants the pebbles to hit the window with only a horizontal
a 2.95 block on a horizontal floor is attached to a horizontal spring that is initially compressed 0.0380 . the spring
a car is traveling at 61.04 mph. the driver applies the brakes and the car decelerates at 1.97 ms2. what is the
A satellite is in a circular orbit about the earth (ME = 5.98 x 1024 kg). The period of the satellite is 2.11 x 104 s. What is the speed at which the satellite travels
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