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An 9.0 m, 240 N uniform ladder rests against a smooth wall. The coefficient of static friction between the ladder and the ground is 0.60, and the ladder makes a 50.0° angle with the ground. How far up the ladder can an 880 N person climb before the ladder begins to slip?
John measured the thickness of a book using a measuring stick. Calculate the mean thickness of the book
In an RLC series circuit, these three elements are connected in series: a resistor of 67.0 ?, a 33.0-mH inductor, and a 0.0480-F capacitor. Find the resonant frequency for the circuit
solenoid is formed by winding 23.0 m of insulated silver (resistivity 1.59 x 10-8 Ω·m) wire around a hollow cylinder. The turns are wound as closely as possible without overlapping, and insulating coat on the wire is negligibly thin.
A car is travelling with a velocity of + 88.0 km/h. It accelerates at a constant rate of 20 m/s2. If the acceleration lasts for 5.6s, what is the final velocity of the car.
Examining your imange in a convex mirror whose radius of curvature is 24.6cm, Where is the image of your nose located
A fighter jet is launched from an aircraft carrier with the aid of its own engines and a steam-powered catapult. The thrust of its engines is 3.26 x 105 N. What is the work done on the jet by the catapult
A stone dropped into a pond generates a travelling wave group approximately 1 m long; the waves within the group have a wavelength of about .1 m Estimate the range of the wavevector spectrum representing the group.
What is the relationship between a vector and a coordinate system? Between a vector and the number line? What properties or values of a vector depend on the coordinate system used to express it?
The angular momentum of a flywheel having a rotational inertia of 0.125 kgm2 decreases from 3.0 to 2.0 kgm2/s in a period of 1.5 s. How much work was done on the wheel
A baseball player hits a baseball (m = 0.144 kg) as shown in the figure below. The ball is initially traveling horizontally with speed of 39 m/s. find the magnitude of the average force of the bat on the ball
A 60.0 resistor is connected in parallel with a 116 resistor. This parallel group is connected in series with a 20.0 resistor. The total combination is connected across a 15.0 V battery.
A 500 kg cart is at the top of a steep track. It rolls from rest down a 7 meter hill. How much potential energy does it have at the top of the hill
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