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The collision between a hammer and a nail can be considered to be approximately elastic. Estimate the kinetic energy acquired by a 14 g nail when it is struck by a 550 g hammer moving with an initial speed of 5.1 m/s.
A 190 g sampleof a substance is heated to 324°C, What is the specific heat of the substance
A 500 gram mass is used as a pendulum bob so that itforms a pendulum that is 2.0000 metres long. How high is the pendulum bob above its originalposition?Draw a digram in which variables are clearly illustrated
A rectangular sample of a metal is 3.5 cm wide and 475 µm thick. When it carries a 42 A current and is placed in a 0.8 T magnetic field it produces a 6.5 µV Hall emf, Determine the Hall field in the conductor
a 4.0 kilogram cart moving to the right and a 6.0 kilogram cart moving to the left on a horizontal frictionless surface. find the magnitude of the total momentum of the two-cart system
If E decreases (becomes more negative), the radius r of the orbit will decrease. If air drag is relatively small, the satellite can be considered to be in a circular orbit of continually decreasing radius.
Adjacent antinodes of a standing wave on a string are 15.0cm apart. A particle at an antinode oscillates in simple harmonic motion with amplitude 0.850cm and period 0.0750 s. The string lies along the +x-axis and is fixed at x=0. What is the amplitud..
At some instant the velocity components of an electron moving between two charged parallel plates are vx = 1.90 105 m/s and vy = 3.00 103 m/s. What is the electron's acceleration in the field
A nuclear power plant has a reactor that produces heat at the rate of 838MW. this heat is used to produce 253MW of mechanical power to drive an electrical generator. a) at what rate is heat discarded to the environment by this power plant? b) what..
If Neville weighs 25 N and climbs a mountain and exerts 500 J of work, how far did Neville climb
A force in the negative direction of an x axis is applied for 24 ms to a 0.40 kg ball initially moving at 10 m/s in the positive direction of the axis. What is the ball's speed just after the force is applied
plane flies at 1.13 times the speed of sound. Its sonic boom reaches a man on the ground 0.99 min, What is the altitute of the plane
A long straight horizontal wire carries a current I = 2.40Ato the left. What is the magnitude F of the magnitude force on the charge
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