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A skydiver of mass 80 kg jumps from a slow-moving airplane and reaches a terminal speed of 50 m/s. What is the acceleration of the skydiver when her speed is 30 m/s? Let down be the positive directi
A 1.60m diameter wagon wheel makes one revolution in 3.70s . What's the tangential speed of a point in its rim?
1) A Michelson interferometer is illuminated with a normal, monochromatic beam of light. When one of the mirrors of the interferometer is moved 2.53 X 10^-5 m it is observed that 92 fringe pairs (b
If the eyepiece with a focal length of 2.5 cm is used with a final image at infinity, what will be the overall angular magnification of the microscope?
What is the orientation of the coil with respect to the magnetic field when the maximum induced voltage occurs?
Josh starts throwing his pitch; we assume that his arm moves in a perfect circular arc, and his arm is 0.7 m long. If he needs to release the ball with a tangential velocity of 35m/s what centripeta
Calculate the thickness if the balloon has a radius 0.1 meters and the density of lead is given by 11.3E3 kg/m^3.
If the frequency is variable and the length of the closed (at both ends) tube is fixed at 45 cm, sketch the plastic tube showing the positions of the nodes and anti-nodes for the three lowest resona
Using a 60 cm focal length converging lens, one wishes to obtain a virtual image which is four times as large as the object. Where must the object and image be?
A virtual image is formed by a convex mirror that has a 30 cm focal length. Where must the object be placed if the image size is to be half the size of the object? Verify with a ray diagram.
A mass-spring system oscillates on a horizontal frictionless surface with an amplitude of 3.24 cm. a) If the spring constant is 234 N/m and the mass is 0.580 kg, determine the mechanical energy of the
A lead bullet with a mass of 0.02 kg traveling at 198 m/s strikes an armor plate and comes to a stop. If all the energy is converted to heat and absorbed by the bullet, what is the temperature chang
After the car has stopped, what is the change in temperature of the brake pads and rotors? You do not have to enter units for this problem, only the numeric value to two decimal places.
A bottle containing 6.6 kg (mass) of water at a temperature of 28.2 oC is placed in a refrigerator where the temperature is kept at 1.9 oC. How much heat is transferred from the water to cool it to th
An aluminum wing on a plane is 34.8 m long when the temperature is 20 oC. At what temperature would the wing be 0.06 m shorter? Enter your answer to one decimal place and do not enter units for this
A ball (M=0.5 kg) is rotated in a horizontal circle on the end of a string that has a maximum tension of 50 N. What is the maximum speed the ball can have before the string breaks?
What is the moment of inertia of the object about an axis at the left end of the rod?
A concave mirror has a radius of curvature of 13.4 cm. If a pointlike object is placed 8.31 cm away from the mirror on its principal axis, where is the image? Take a positive answer to be in front o
Two satellites with equal rest masses of 100 kg are traveling toward each other in deep space. They have identical speeds of 0.600c. The satellites collide and stick together. What is the rest mass
As measured in the coordinate system of the Sun, how long did it take for the spaceship to travel that distance? The radius of the orbit of Jupiter is 778 × 109 m, and that of the orbit of Mar
In a typical radio receiver , the antenna collects enough photons to push a current averaging (very rougly) 1 uA through a potential difference of (very roughly) 10mV. Roughly how many photons does
what is the maximum value that v can have if the de Broglie wavelength of the buckeyball beam is to be at least 10 times the size of the buckeyball (so that we might actually be able to display inte
Suppose a photon is equally likely to be found anywhere in an interval of 18.6 cm along the x-axis. What is the minimum uncertainty in the photon's x component of momentum?
Note that, in addition to time dilation, one must take into account that the signals of successive heartbeats have to travel shorter distances because the spaceship is moving closer (Doppler Effect
How fast is the spaceship traveling towards the Sun? The radius of the orbit of Jupiter is 778 × 109 m, and that of the orbit of Mars is 228 × 109 m.