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A long solenoid that has 1,190 turns uniformly distributed over a length of 0.420 m produces a magnetic field of magnitude 1.00 multiply.gif 10-4 T at its center
An 81 kg person puts on a life jacket, jumps into the water, and floats. The jacket has a volume of 3.1 x 10-2 m3, What is the density of the life jacket
A skier of mass 64 kg is being towed up a slope ( µ = 15 ±) by a towrope at a constant speed of 3 m/s, what is the force (in N) that the towrope applies to the skier
The rod shown in the drawing is pivoted about an axle passing through its center (solid circle). Is the net torque about the axle due to these forces zero
You heat a 507 cm3 sample of a substance from 131 °C to 265 °C, Calculate the coefficient of volume expansion of this substance
The projection lens in a certain slide projector is a single thin lens. A slide 24.3 mm high is to be projected so that its image fills a screen 1.86 m high. Determine the focal length of the projec
A flat stack of two materials, the first of index of refraction 1.52 and thickness 2 mm, and the second of index of refraction 1.63, What is the size (radius) of the circle of light
Resistors of values 8, 12 and 24 Ohms are connected in parallel across a fresh battery with voltage 12 volts. Which resistor consumes the least power
If the kinetic energy of an electron is 910 eV, calculate its De Broglie wavelength. For this non-relativistic electron you must firs, calculate its velocity from the general kinetic energy equation
an insulated beaker with neligiblr mass contains.280kg of liqid water at a temperature of 84.5degree celicous. what is the final temperature of the ice/ water mixture
The intensity of sunlight at the top of the Earth's atmosphere is about 1360W/m^2. What is the total power emitted by the Sun
In a pan on a stove 125 g of water at 100 degrees Celsius is converted to steam. What s the entropy change of water the is now steam
A positron emission tomography (PET) scanner examines the gamma rays emitted when positrons and electrons annihilate each other. What is the wavelength of the photons
The average value of the squared speed does not equal the square of the average speed. Calculate the average value of the squared speed
The intensity of the light that reaches Earth from the star is 3.94 x 10-21 W/m2. At what rate does the star radiate EM energy
One cubic meter of water flowing over Niagara Falls in New York drops 96.6 meters. how much heat energy would the water have
A Carnot engine has an efficiency of 0.861, and the temperature of its cold reservoir is 381 K. Determine the temperature of its hot reservoir
A system does 167 J of work on its environment and gains 85.5 J of heat in the process, Find the change in the internal energy of the environment
A bottle containing 3.4 kg (mass) of water at a temperature of 23.4 oC is placed in a refrigerator where the temperature is kept at 3.2 oC
The isotope 15N undergoes radioactive decay to form 15C. What charged particle is emitted in the decay process? how much kinetic energy in MeV is given to the particle
In an instant given two cars are moving in opposite directions and they are separate a distance of 300km. Determine the distance in Km that each car travel in that time
A face appears in a convex mirror; face is 75% its normal size and appears to be 24cm behind the mirror. How far was the face standing from the mirror
An unknown material has a normal melting/freezing point of -26.3 ° C, and the liquid phase has a specific heat capacity of 160 J/(kg · C °). What is the latent heat of fusion of the un
A commonly used method of fastening one part to another part is called "shrink fitting." A steel rod has a diameter of 2.0023 cm, By how many Celsius degrees should the rod be cooled
A convex spherical mirror, whose focal length has a magnitude of 19.0 cm, is to form an image 12.4 cm behind the mirror. What is the magnification of the mirror