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The charge of 20μ C produces an electric field. Twopoints are 10 cm and 5cm from this charge. Find the amount of workdone in taking a proton from one point to another.
A person typically contains 5.0 L of blood of density 1.05 g/ml When at rest, it normally takes 1.0 mint to pump all this blood through the body. What average power does the heart expend in the process
A car travelling at 16 m/s runs out of gas while travelling up a 21 degree slope. How far up the hill would it coast before starting to roll back down.
Two equally charged, 1.00 {\rm g} spheres are placed with 2.00 {\rm cm} between their centers. What is the magnitude of the charge on each sphere
Assume you have a monatomic gas with initial volume and pressure V1 and p1, respectively. If you apply work on the gas to compress it isothermally until its volume is 57% of its initial volume and its pressure rises to a value p2. To what percentage ..
A loop of wire has the shape shown in the drawing. The top part of the wire is bent into a semicircle of radius r = 0.23 m. The normal to the plane of the loop is parallel to a constant magnetic field ( = 0°) of magnitude 0.73 T. What is the change ?..
As a protest against the umpire's calls, a baseball pitcher throws a ball straight up into the air at a speed of 22.0 m/s. find the force he exerts on the ball to give it this upward speed
An electron with a speed of 3.0x10^6m/s moves into a uniform electric field of magnitude 1.0x10^3 N/C. How far does the electron travel before it is brought to rest
A hummingbird is flying in such a way that it is initially moving vertically with a speed of 4.4 m/s and accelerating horizontally at 11.9 m/s2. Assume the bird's acceleration remains constant for the time interval of interest
An object moves 2.27m in the +x-direction under the influence of a 141N force directed 41 degrees above the x-axis. Find the work done on the object
A brick has a mass of 1.10 kg. What is the brick's weight at the surface of the Earth, What is the mass of the bucket and water
Light from an argon laser strikes a diffraction grating that has 5310 grooves per centimeter. The central and first order principal maxima are separated by 0.488 m on a wall 1.72 m from the grating. Determine the wavelength of the laser light.
As morning sunlight falls on a tethered helium balloon, it expands from a volume of 1.05 ×103 m3 to 1.15 ×103 m3. how many joules of solar energy are absorbed
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