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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.
A 150 block is to be pulled up a plane of length 100m, inclined at 30, there is no friction between the block and the plane.
If the bullet lodges in the rod and the angular velocity of the rod is 9.0 rad/s immediately after the collision, what is the magnitude of the bullet's velocity just before impact?
You want to take a picture of a 4.5 m tall giraffe at the zoo. Your camera has a focal length of 50 mm and the size of the camera's CCD array is 4.8 mm. How far from the giraffe do you need to stand
An alumanum disk is held between the poles of a power magnet and then pulled out. The person pulling on the disk feels an opposing force due to currents induced through Faradays law. Explain why the
a. What thermodynamic condition must be met for a state of equilibrium to exist?
Certain animals, such as kangaroos and cats, are well known for their jumping abilities. What would you hypothesize about the biomechanical characteristics of their muscles?
An oil film (n = 1.46) floating on water is illuminated by white light at normal incidence. The film is 283 nm thick. (a) Find the wavelength and color of the light in the visible spectrum most strong
A heat engine exhausts its heat at 340°C and has a Carnot efficiency of 39%. What exhaust temperature would enable it to achieve a Carnot efficiency of 47%?
When the car you are riding in stops suddenly, heavy objects move toward the front of the car. Why does a helium-filled balloon move toward the rear of the car? Please state any laws of motion, etc
The highest barrier that a projectile can clear is 13.1 m, when the projectile is launched at an angle of 14.0° above the horizontal. What is the projectile's launch speed?
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 heat engine utilizes a heat source at 460°C and has an ideal (Carnot) efficiency of 30%. To increase the ideal efficiency to 40%, what must be the temperature of the heat source?
A soccer ball is kicked at an angle of 62 degrees to the horizontal, with an initial speed of 18 m/s. Assume for the moment that we can neglect air resistance. How long is the ball in the air (in s)
A plate produces a diffraction pattern with a central bright maximum, and minima at 3, 6, and 9 cm from the center of this maximum. Is this a double-slit plate or a single-slit plate?