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A machine part rotates at an angular speed of 0.46 rad/s; its speed is then increased to2.1 rad/s at an angular accelerationof 0.54 rad/s2. Find the angle through which the part rotates before reaching this finalspeed.
A hiker, who weighs 919 N, is strolling through the woods and crosses a small horizontal bridge. What is the magnitude of the force that a concrete support exerts on the bridge at the near end
Two railroad freight cars with masses 110 Mg and 140 Mg approach with equal speeds of 0.350 m/s. They collide, the lighter car rebounding opposite its original direction at 0.330 m/s.
The initial angle of the ball’s motion off the tee is 29.0° above the horizontal. If the tee level is 17.0 m above the level of the fairway, explain how far east of the tee does the ball hit the fairway?
On April 13, 2029 (Friday the 13th!), the asteroid 99942 mi Apophis will pass within 18600 mi of the earth-about 1/13 the distance to the moon! It has a density of 2600 kg/m^3, how much kinetic energy would it deliver
A two-slit interference experiment is set up, and the fringes are displayed on a screen. How does the fringe pattern change
A small, 300 g cart is moving at 1.30 m/s on an air track when it collides with a larger, 4.00 kg cart at rest. What is the speed of the large cart after the collison
A double-slit experiment has slit spacing 0.140mm. What should be the slit-to-screen distance L if the bright fringes are to be 5.00mm apart when the slits are illuminated with 652nm laser light
You (mass 55 kg) are riding your frictionless skateboard (mass 5.0 kg) in a straight line at a speed of 4.7m/s, What is your new speed, while holding the flour sack
Record the resistance and current values calculated in questions 5, and load the numbers into a spreadsheet. Make a plot of the current I as a function of the total resistance R. (Remember that the R values will go on the x-axis and the I values o..
A 10 g bullet moving 1000 m/s strikes and passes through a 2.0-kg block initially at rest. The bullet emerges from the block with speed of 400 m/s. a.) How much energy was lost in the collision? b.) Calculate the average force exerted on the block as..
A cold room has walls constructed of 0.24 m brick on the outside, 0.15 m foam insulation in the middle and 1.6 cm of wood on the inside. Calculate the outside and inside surface temperature of the composite wall
A molecule of DNA (deoxyribonucleic acid) is 2.35 µm long. The ends of the molecule become singly ionized: negative on one end, positive on the other. Determine the effective spring constant of the molecule
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