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a locomotive slows from a speed of 26 m/s to 0 in 18s. what is the distance traveled in meters?
an object is being pulled toward the origin. the force pulling on the object is fx -kx2 gravitational and electrical
A student places an object on the 5.0 cm mark of the meter stick. He places a positive lens that he knows has a focal length of 15.0 cm at the 30.0 cm mark on the meter stick. From the data what is the focal length of the negative lens
A circular loop in the plane of the screen lies in a 0.61 T magnetic field pointing into the screen. What is the magnitude of the average induced emf
The intensity of radiation from a distant source like the Sunvaries inversely with the square of the distance from thesource. At the top of Earth's atmosphere the solar intensity(power per unit area) is 1.35 kW/m2.
An iron bolt is used to connect two iron plates together. Thebolt must withstand shear forces up to about 3150 N. Calculate the minimum diameter for the bolt
The pulley is frictionless and of negligible mass. The coefficient of kinetic friction between mass 1 and teh ramp is 0.25. Evaluate the change in kinetic energy of the 50 kg block as it moves from a to b, a distance of 20 m
The diameters of the main rotor and tail rotor of a single-engine helicopter are 14.4 m and 2.1 m, respectively. What is the speed of the tip of the small rotor
Tension is maintained in a string as in the figure below. The observed wave speed is 22 m/s when the suspended mass is 3.0 kg. What is the mass per unit length of the string?
With light from a gaseous discharge tube incident normally on a grating with slit separation 1.92 ?m, Compute the wavelength of the light
An automobile batery has 12 V and an internal resistance of .05 ohms. The starter draws 40 amps of current when starting the car. The resistance of the starter is
Bats emit a wide variety of sounds, one type emits pulses of sound having a frequency between 39kHz and 78kHz. What is the range of wavelengths of this sound in air
A 3.34 bullet moving at 280 enters and stops in an initially stationary 3.40 wooden block on a horizontal frictionless surface. How much work was done in stopping the bullet
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