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A particle starts from rest and accelerates as shown in the figure below. (a) Decide the particle's speed at t = 10.0 s. m/s Decide the particle's speed at t = 20.0 s? m/s (b) Decide the distance traveled in the first 20.0 s. (Enter your answer to one decimal places.)
A f = 5 cm thin lens is to the left of a concave spherical mirror with a radius of curvature of magnitude 8 cm. The lens and the mirror are 20 cm apart, and an object is placed 8 cm to the left of the lens. Determine the position, orientation, and ma..
An object's true weight is 123 N. When it is completely submerged in water, its apparent weight is 82 N. what is the density of the object
a 27 kg block is pulled across a horizontal surface by a rope. the block has an acceleration of 3.5 ms2 and the
The plane of a flat, circular loop of wire is horizontal. An external magnetic field is directed perpendicular to the plane of the loop. The magnitude of the external magnetic field is increasing with time.
A traveling wave in a string of linear density 0.01 kg per meter is described by the wave function y = 0.02 m sin(50 rad/m x - 1750 rad/s t). find the wave speed and the tension in the string
The photoelectric threshold wavelength of a tungsten surface is 272 nm. What is the threshold frequency of this tungsten
Suppose the temperature of 4.70 L of ideal gas drops from 385 K to 275 K. Calculate the number of moles of gas
A speedboat moves on a lake with initial velocity vector v1,x = 9.69 m/s and v1,y = -2.99 m/s, Find the speedboat's final speed
the center of mass of a proton with mass 1.673middot10-27 kg and alpha particle with mass 6.645middot10-27 kg is moving
The moment of inertia of a 0.949 kilogram bicycle wheel rotating about its center is 0.131 kg x m2. Find the radius of this wheel, suppose the weight of the spokes can be neglected
The light isotope of lithium, 5Li is unstable and breaks up spontaneously into a proton (hydrogen nucleus) and an particle (helium nuclus). In this process, a total energy of 2.75 10-13 J is released, appearing as the kinetic energy of the two rea..
During the Millikan experiment used to determine the charge on the electron, a charged polystyrene microsphere is released in still air in a known vertical electric field, How many excess electrons are on the sphere
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