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The Sun produces energy by nuclear fusion reactions in which matter is converted into energy. We can gauge that the Sun produces energy at the rate of3.80×1026 W.
a. How many tons of matter does the Sun lose each second?
b. If it kept losing energy at this rate, how long would it take the Sun to lose all its mass?
In her bathroom, Mindy has an overhead heater that consists of a coiled wire made of nichrome that gets hot when turned on. calculate the resistance of the heater when it is turned on
A group of particles is traveling in a magnetic field of unknown magnitude and direction. What is the direction of this the magnetic force
An electron with speedv0=22.5× 106m/s is traveling parallel to a uniform electric field of magnitudeE=11.6× 103N/C. How far will the electron travel before it stops
To loosen the lid on a jar of jam 8.9 centimeter in diameter a torque of 8.0 N•m must be applied to the circumference of the lid. compute the minimum force needed to open the jar
You have 18 speakers in the with a large room where there are many audiences , what is the best way to arrange the speakers to get the best less frequency ?
An ideal refrigerator utilizes a Carnot cycle operating between 0 degrees Celcius and 18 degrees Celcius. How much energy must be supplied to the refrigerator
A 120- crate, starting from rest, is pulled across a floor with a constant horizontal force of 380. What is the final speed of the crate
A 400-kg piano slides 3.6 m down a 28 degree incline and is kept from accelerating by a man who is pushing back on it parallel to the incline. Determine the force exerted by the man
Consider an electron in the ground state of the hydrogen atom, separated from the proton by a distance of 0.0529 nm
an 55.0-n crate of apples sits at rest on a ramp that runs from the ground to the bed of a truck. the ramp is inclined
A 45.5-g golf ball is driven from the tee with an initial speed of 47.3 m/s and rises to a height of 30.4 m. Neglect air resistance and determine the kinetic energy of the ball at its highest point
find the velocity of the plane relative to the ground.
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