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At perihelion (closest approach to the sun), Mercury is 0.31 AU from the sun. Calculate how hot it gets on Mercury when the sun is directly overhead at perihelion. (On average, Mercury reflects 12%
A circular wire loop carrying an alternating current I(t)=I0sin(2πft) lies flat in the x-y plane centered at the origin (radius of the loop r=1.0 m, current amplitude I0=1.0 A, cycle frequency f=
A satellite viewing a surface location under cloud free conditions measures a 12um radiance of 6.2 W m^-2um^-1sr^-1. Compute the brightness temp Tb.
A student repeatedly measured the length of a simple pendulum and recorded the results in centimetre as: 36.9, 36.7, 36.8 and 36.6. What is the precision index of this measurement in cm?
Assume the merry-go-round is a uniform disk of radius 2.0 m and has a mass of 900 kg, and two children (each with a mass of 20 kg) sit opposite each other on the edge. Calculate the torque required
A dedicated sports car enthusiast polishes the inside and outside surfaces of a hubcap that is a section of a sphere. When she looks into one side of the hubcap, she sees an image of her face that i
determine the magnitude of the force from the ground on (a) each front wheel (assuming equal forces on the front wheels) and (b) each rear wheel (assuming equal forces on the rear wheels).
Calculate the length L required to bring the ankles of a 60.0 kg jumper momentarily to rest 5.0 m above the river. Assume the initial drop velocity from the bridge is zero and neglect friction and d
Suppose that some of the atoms in a Cu crystal,, which has an fcc lattice, are gradually replaced by Zn atoms Considering that Zn is divalent while Cu is monovalent, calculate the atomic ratio of Z
If you bend your knees when you land, the bulk of your body comes to a stop over a distance of 0.54 m. Now estimate the force exerted on you by the floor. Neglect the fact that your legs stop in a s
What is the magnitude of the current density across A1? If the current density across A2 is one-fourth the value across A1, what is the radius of the conductor at A2?
Due to friction with the Earth's atmosphere, a large static electric charge could build up on our plummeting asteroid fragment. Would you expect our fragment to generate a magnetic field? Explain w
Find the rockets velocity and position at the end of 4.00 s. Find the maximum height the rocket reaches. Find the velocity the instant before the rocket crashes on the ground.
A beam of light is propagating through diamond (n1 = 2.42) and strikes a diamond-air interface at an angle of incidence of 28o.
A thin metallic spherical shell of radius 15.7 cm has a total charge of 7.53 μC placed on it. At the center of the shell is placed a point charge of 1.65 μC. What is the electric field at a d
A pyramid has a square base and four faces which are equilateral triangles. A charge Q is placed on the center of the base of the pyramid. What is the net flux of electric field Φe emerging fro
Two plates separated by a distance 18.8 mm are charged to a potential difference of 7.25 volts. A constant 9.31 N force pushes a -8.30 mC charge from the positively charged plate to the negatively
Two identical point charges q = 43.0 pC are separated in vacuum by a distance 2d = 48.0 cm. Calculate the total electric flux through the infinite surface placed at a distance d from each charge, p
A diffraction grating has 4272 lines/cm. Light that contains all wavelengths between 461 and 651 nm shines on the grating. Calculate the width of the dark area between the first and second order sp
With a magnetic field perpendicular to a single 13.2 cm diameter circular loop of copper wire decreases uniformly from .670 T to zero. If the wire is 2.25 mm in diameter how much charge moves past
A sealed 90-m3 tank is filled with 5000 moles of oxygen gas (O2) at an initial temperature of 270 K. The gas is heated to a final temperature of 440 K. The ATOMIC mass of oxygen is 16.0 g/mol, and t
The pendulum in a grandfather clock is made of brass and keeps perfect time at 20 ° C ^circ C.How much time is gained or lost in a year if the clock is kept at 30 ° C ^circ C? (Assume the frequency
A rectangular piece of cortical bone with sides 2 cm (z) x 3 cm(x) x 4 cm (y), is tested by applying bi-axial forces in the x and y directions. Both forces have equal magnitudes Fx = Fy = 6000 N. As
A solid conducting sphere of radius a has a net positive charge 2Q. A conductng spherical shell of inner radius b and outer radius c is concentric with the solid sphere and has a net charge -Q. The
A 1.0 kg mass attached to a spring moves at 2.0 m/s when it passes through it's equilibrium position and is instantaneously at rest at a distance of 20cm from its equilibrium position. What is the