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A crate sits on a flat-bed truck that is traveling with a speed of 50 km/h on a straight, level road. If the coefficient of static friction between the truck bed and the crate is 0.30, find in how short a distance can the truck stops with a constant acceleration without the crate sliding?
The three ropes are tied to a small, very light ring. Two of these ropes are anchored to walls at right angles with tensions T1 = 35 N andT2 = 70 N. What are the magnitude and direction of the tension Tvec3 in third rope.
Conceptual Example 14 provides useful background for this problem. A playground carousel is free to rotate about its center on frictionless bearings, What is the person's mass
a 1.5-kg object is attached to an ideal massless spring with a spring constant of 20 nN/M OSCILLATES on horizontal, Find the frequency of the oscillations
A pendulum consists of a uniform disk with radius 10 cm and mass 400 g attached to a uniform rod with length 500 mm and mass 285 g (see the figure). A) Calculate the rotational inertia of the pendulum about the pivot. B) What is the distance between ..
In the bohr theory of the hydrogen atom an electron moves in acircular orbit about a proton. the radius of the orbit is0.53x10^-10m. find the electrostatic force acting on each particle
a block slides up a frictionless incined plane set at an angle of 25 degrees.a if the block reaches a maximum height on
A harmonic wave travels along an ideal rope from left to right. At the position we’ve marked as zero meters, we observe the rope reaching a maximum displacement of 15 cm every 2 seconds. We also notice that the distance between neighboring maxima ..
Light of wavelength 624 nm is incident perpendicularly on a soap film suspended in air. Assume the soap film has n = 1.33. What are the smallest two thicknesses of the film for which reflections from the film undergo fully constructive interference?
Jordan is building a compound microscope using an eyepiece with a focal length of 7.50 cm and an objective with a focal length of 1.500 cm. How far apart should Jordan place the lenses
In a physics lab, a student accidentally drops a 21.0-g brass washer into an open Dewar of liquid nitrogen at 77.2 K. How much liquid nitrogen boils away as the washer cools from 291 K to 77.2 K? The latent heat of vaporization for nitrogen is 199.1 ..
You're in a uniform electric field of magnitude 300N/C, compute the potential difference if you travel 1 cm in the direction of the field
As the driver steps on the gas pedal, a car of mass 1 180 kg accelerates from rest. What is the minimum average power output of the engine over this time interval
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