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A ladder 5.30 m long leans against a wall inside a spaceship. From the point of view of a person on the ship, the top of the ladder is 4.87 m above the floor. The spaceship moves past the Earth with a speed of 0.95c in a direction parallel to the floor of the ship. What is the length of the ladder as seen by an observer on Earth
in the figure two curved plastic rods one of charge q and the other of charge -q form a circle of radius r in an xy
How much work did movers do (horizontally) pushing a 140{rm kg} crate 10.60 m across a rough floor without acceleration, if the effective coefficient of friction was 0.700.
A torque of 12 N ? m is applied to a solid, uniform disk of radius 0.50 m. If the disk accelerates at 5.7 rad/s2, what is the mass of the disk
A dentist's drill starts from rest. After 3.50 s of constant angular acceleration it turns at a rate of 2.7 x 104 rev/min. Find the drill's angular acceleration
An alpha particle (helium nucleus, charge 2e) starts from rest and travels a distance of 1.88 cm under the influence of a uniform electric field of magnitude 12.2 kV/m
In a regression analysis with several X variables, the sign of the coefficient estimate of one of the variables is the opposite of what you believe it should be. How would you test to determine whether multicollinearity is the cause?
Decreasing the resistance of an ammeter's shunt resistance a.) allows it to measure a larger current at full scale deflection. b.) converts it to a voltmeter. c.) allows it to measure a smaller current at full scale deflection. d.) enables more curre..
What is the Schmidt number for this process?- Develop a model, in final integrated form, to predict the concentration of water vapor exiting the tube.
Male mosquitoes in the mood for mating find female mosquitoes of their own species by listening for the characteristic "buzzing" frequency of the female's wing beats. How many wing beats occur in one minute
The moon revolves aound the Earth in 27.3 days in nearly circular orbit with a radius of 3.8*10^8 m. what is the moon's centripetal acceleration
Your 70kg friend is standing on the outer edge of a merry go round with moment of inertia 695kg*m^2, what will be the new angular velocity
On a frictionless surface, a sliding box collides and sticks to a second identical box that is initially at rest. What percentage of the initial kinetic energy of the system
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