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A 1280 kg car pulls a 350 kg trailer. the car exerts a horizontal force of 3.6 x 103 N against the ground in order to accelerate. What force does the car exert on the trailer? Assume an effective friction coefficient of 0.15 for the trailer.
A straight rod consists of a 1.2-cm-long piece of aluminum attached to a 2.0-cm-long piece of steel. By how much will the length of this rod change
Water flowing through a garden hose of diameter 2.79 cm fills a 21.0-L bucket in 1.10 min. What is the speed of the water leaving the end of the hose
A water filled manometer is used to measure the pressure in air filled tank. One leg of the manometer is open to atmosphere. For a measured manometer deflection of 250 cm of water, determine the tank static pressure. Barometric pressure is 101.3 KPa ..
a current of 0.77 a flows through a copper wire 0.47 mm in diameter when it is connected to a potential difference of
In the figure below, a particle moves along a circle in a region of uniform magnetic field of magnitude B = 3.50 mT. What is the radius of the circle
A screen is placed 1.0 meter away from the slits. Initially, you measure the interference pattern from the 2 slits on the screen. You then place the guanine film directly behind one of the slits, Determine the thickness of the guanine film
A rock is thrown downward into a well that is 8.90 deep. If the splash is heard 1.20 seconds later, what was the initial speed of the rock? Take the speed of sound in the air to be 343 m/s.
q1. eight lights are connected in parallel to a 116 v source by two leads of total resistance 1.1. if 240 ma flows
Person A and Person B are both on Earth in the northern hemisphere. Person A is further north (i.e., at a higher latitude) than Person B. Considering only the rotational motion of the Earth on its axis
The intrinsic impedance and the wavelength of a uniform plane wave traveling in an unknown dielectric at 3 GHz are measured to be ~ 194 Ω and ~ 5 .14 cm respectively. Determine the constitutive parameters (i.e. εr, and μr) of the material.
A pinecone falls straight down from a pine tree growing on a 20 degree slope. What are the components of the pinecone's impact velocity parallel and perpendicular to the ground
In the Bohr model, as it is known today, the electron is imagined to move in a circular orbit about a stationary proton. what would be the corresponding orbital radius
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