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Martha travels 25 miles north on her bike. Then, she travels 25 miles due east. What is Martha's displacement?
When the temperature of a thin silver [? = 19 × 10-6 (C°)-1] rod is increased, the length of the rod increases by 3.7 × 10-3 cm. By how much does the length of the gold rod increase
One day, after pulling down your window shade, you notice that sunlight is passing through a pinhole in the shade and making a small patch of light on the far wall. estimate the diameter of the pinhole
When the eye looks at a star (a point of light), diffraction at the pupil spreads the image of the start on the retina into a small disk, What is the linear size of the image of the start on the retina
A cylindrical lead rod with a diameter of 2.54 cm and a length of 76.2 cm is initially at a temperature of 20.0 C. After reaching equilibrium, what is the final temperature of the rod and the mercury
q1. james is scheduled for a job interview with ms. farrar. he knows that she is in charge of selecting placing and
A constant horizontal force a pushes a 4.40kg FedEx package across a frictionless floor on which a xy coordinate system has been drawn. The package's x and y velocity components versus time t.
A hockey player strikes a puck that is initially at rest. The force exerted by the stick on the puck is 960 N, Find the impulse imparted by the stick to the puck
A 139 x 139 timber is used as a short foundation post. It must support a load of 42 kN. Determine the average axial stress in the post
The height of the haystack is 1 meter. You press down on topof the stack and discover that to compress the stack by 25cm, What is the haystack's spring constant
An airplane propeller is 2.18m in length (from tip to tip) and has a mass of 117kg. What is the angular acceleration of the propeller
A spherical balloon containing oxygen gas has a radius of 13.2 cm. what is the mass of oxygen in the balloon
Two figure skaters, one weighing 625N and the other 700N , How much kinetic energy is created during the skaters maneuver
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