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A wave moves on a string with wavelength λ and frequency f. a second wave on the same string has wavelength 2λ and travels with the same velocity. What is the frequency of the second wave?
a) 2f
b) f
c) .5f
d) it cannot be determined from the information given
A 11.0-g bullet is fired horizontally into a 102-g wooden block that is initially at rest on a frictionless horizontal surface, what was the speed of the bullet at impact with the block
Doubling the total energy of a particle: (a) Does not affect its momentum (b) quadruples its momentum (c) more than doubles the momentum (d) doubles its momentum (e) less than doubles its momentum I know the answer is (c) but what equation is used to..
A spherical mirror is to be usedto form, on a screen located 4.50 m from the object, What should be the magnitude of its radius of curvature
A childs toy consists of a spherical object of mass 50 attached to a spring. What is the potential energy of the toy when the spring is compressed 3.5 from its equilibrium position
A stream of water strikes a stationary turbine blade horizontally. The incident stream has a velocity of +16m/s whilst the exit has a velocity of -16m/s. mass of water per second that strikes the blade is 30kg/s.find the magnitude of average force ex..
Consider the central peak in the diffraction envelope in the figure below. Suppose the wavelength of the light is changed to 450 nm. What happens to this central peak?
electric field of a sinusoidal electromagnetic wave obeys the equation \(E=-(375V/m) sin((5.97*10^{15}rad/s)t+(1.99*10^7rad/m)x)\), What is the amplitude of the electric field of this wave
A 76 kg astronaut floating inspace in a 111 kg MMU (mannedmaneuvering unit) experiences an acceleration of 0.035 m/s2,. What is the thrust of the thruster
A ball of mass 0.113 kg is dropped from a height of 1.92m above ground. The acceleration of gravity is 9.8m/s^2.Neglecting air resistance find the speed of the ball when it is at a height of 0.812 m above the ground. Answer in units of m/s.
A 35.0-kg child swings in a swing supported by two chains, each 2.92 m long. Find the force exerted by the seat on the child at the lowest point. (Ignore the mass of the seat.)
An object undergoing simple harmonic motion takes 0.34 s to travel from one point of zero velocity to the next such point. The distance between those points is 40 cm. Calculate the frequency of the motion
Does papillary muscles contract after the other ventricular muscles so that they can take up the slack on the chordae tendineae before the full force of ventricular contractions sends blood against the AV valve flaps.
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