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A 2-kg mass at the end of a 1.5M rod is rotating in a vertical circle with a constant angular velocity of 8.5 radians/sec. What is the tension in the rod at 0 degrees, 90 degrees, and 270 degrees?
Luckily, Hal's sink, Eafin, lands on a padded spring which compresses it a distance of 25.0 cm. What is the constant for the spring that broke Eafin's fall?
By how much does the potential energy of a(n) 15.0-kg child increase when the child climbs a normal staircase to the second floor?
Determine the work done to launch the motion of both the hammer and the bullet. (a) the hammer (b) the bullet
A 6500-kg satellite is in a circular earth orbit that has a radius of 3.4 x 107 m. A net external force must act on the satellite to make it change to a circular orbit that has a radius of 8.3 x 106 m
In being launched from rest it moves through a distance of 87 m and has a kinetic energy of 3.80 107 J at lift-off. What is the work done on the jet by the catapult?
The coefficient of kinetic friction is 0.200, and the refrigerator moves a distance of 6.00 m. (a) Find the work done by the pulling force.
A person pushes a 16.0-kg shopping cart at a constant velocity for a distance of 18.0 m. She pushes in a direction 30.0° below the horizontal. A 60.0-N frictional force opposes the motion of th
A dye molecule has emission cross section cm2 at nm, and fluorescence lifetime 3 ns. Assuming the transition is homogenously broadened, calculate the signal intensity at which the gain is reduced by
Find the magnitude of the magnetic force on the proton. (The magnetic force experienced by the proton in the magnetic field is proportional to the component of the proton's velocity that is perpendi
A wedge-shaped sliver of glass viewed from above is illuminated with 436-nm light. The sharp edge is dark. What is the thickness of the glass at the fifth bright fringe.
When red light of wavelength 620 nm falls on a single slit, it creates a central diffraction maximum that is 8.80 mm wide on a screen 2.00 m away. How wide is the slit? How wide will the central pea
If 720-nm and 660-nm light passes through two slits 0.58 mm apart, how far apart are the second-order fringes for these two wavelengths on a screen 1.0 m away?
A concrete block with a specific weight of 23.6 kN/m3 is suspended by a rope in a solution with a specific gravity of 0.8. What is the volume in m3 of the concrete block if the tension in the rope i
Calculate the average induced voltage between the tips of the wings of a Boeing 747 flying at 880 km/hr above East Lansing. The downward component of the earth's magnetic field at this place is 0.7&
A 8.00 cm diameter wire coil is initially oriented so that its plane is perpendicular to a magnetic field of 0.510 T pointing up. During the course of 0.180 s, the field is changed to one of 0.250 T
A cylindrical drum is 2 ft in diameter, is 3 ft long and weighs 30 lb when empty. Aluminum weights are to be placed inside the drum to make it neutrally buoyant in fresh water. What volume of alumin
An X-ray source of unknown wavelength is directed at a carbon sample. An electron is scattered with a speed of 4.5x107m/s at an angle of 60o. Determine the wavelength of the X-ray source.
A sodium vapor light emits 10 W of light energy. Its wavelength is 589 nm, and it spreads in all directions. How many photons pass through your pupil, diameter 4mm, in 1 s if you stand 10 m from the
A 46.5-cm-diameter circular loop is rotated in a uniform electric field until the position of maximum electric flux is found. The flux in this position is measured to be 5.21 105 N · m2/C. Wh
An electric field varies in space according to this equation E(x) = a x e^-bx, where a = 1.353 N(Cm)^-1 and b = 0.847 m^-1. What is the potential difference between the points at x = 0 and x = xmax?
A block slides down a frictionless plane having an inclination of θ=15.0 degree.The block starts from rest at the top, and the length of the incline is 2.00 m .
In a circus act, an 18kg dog is trained to jump onto a 3.0 kg skateboard moving with a velocity of 0.14 m/s. At what velocity does the dog jump onto the skateboard if afterward the velocity of the d
What are the charge density and total charge on each plate? Draw the equipo- tential surfaces at 0.10 V and 0.20 V.