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A particle moves so that its position (in meters) as a function of time in (in seconds) is r = I + 3.0 t^2 J+t K. Write expressions for its velocity and its acceleration as functions of time. Evaluate for t = 6.1 s. i-component of velocity?
j-component of velocity?
k-component of velocity?
i-component of acceleration?
j-component of acceleration?
k-component of acceleration?
An electric eld of magnitude 3.5 kN/C is applied along the x axis. Calculate the electric flux through a rectangular plane 0.35 m wide and 0.7 m
35-mm camera has a single thin lens having a 50.0-mm focal length. A woman 1.7 m tall stands 10.0 m in front of the camera, (a) Show that the lens-film distance must be 50.3 mm.
A suspension bridge is 60.0 m abovethe level base of a gorge. A stone is thrown or dropped from the bridge. At the location of the bridge, g has been measuredto be 9.83 m/s2.
A cyclist pedals a bicycle. The driving wheel accelerates from the rest to an angular speed of 6.4 rev/s in 3.8 revolutions. What is the angular acceleration of the wheel
A small conductive rod of length 1.5 m moves with a constant velocity v=15 m/s in a direction parallel to a long wire carrying a current of 22 A. Calculate the electric potential induced across the rod
What is the de Broglie wavelength (in angstrom) of an electron at 100 eV? What is the wavelength for electrons at 12 keV, which is typical of electron microscopes? Comparing this to visible light comment on the advantages of electron microscopes.
A gamma ray photon emitted with 226Ra (m=226.0254406u) has an energy of 0.186MeV. Use conservation of linear momentum to compute the recoil speed of a 226Ra nucleus after such a gamma ray is emitted. Assume that the nucleus is at rest initially, and ..
you are a blackbody with a temperature 98.6 degrees f.a what is the total energy density of the radiation you emit?b
The intensity of the sunlight that reaches Earth's upper atmosphere is approximately 1450 W/m2. Find the rms value of the magnetic field.
An incredibly large slingshot is stretched 1.0 meters to launch a 128.0-gram projectile with a speed sufficient to escape from the Earth (11.2 km/s). What is the spring constant of the device if all the potential energy is converted to kinetic ener..
q1. a pair of 12 rm mu f capacitors in a high-power laser are charged to 1.5 rm kv.what charge is stored in each
A copper container of mass 0.080kg and specific heat 387Jkg^-1K^-1 contains 0.3kg of water and 0.04kg of ice at 0 degrees Celsius. Find the mass of the water left in the container
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