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A camera is equipped with a lens with a focal length of 38 cm. When an object 2.9 m (290 cm) away is being photographed, what is the magnification?
A 330 g air track on a horizontal air trek is attached to a string that goes over a pulley with a moment of inertia of 5.00x10^-6 kgxm^2 and a radius of 1.35 cm. Find acceleration ofthe hanging mass
Assume all the electrons in 21 gram of copper atoms were placed at the North Pole of the earth and all the protons at the South Pole. Obtain how many electrons are in 21 grams of copper
A cart with mass 310 g moving on a frictionless linear air track at an initial speed of 1.0 m/s undergoes an elastic collision with an initially stationary cart of unknown mass. What is the speed of the two-cart center of mass
A baseball (m = 145 gram) approaches a bat horizontally at a speed of 39.1 m/s (87 miles per hour) and is hit straight back at a speed of 45.5 m/s (102 mi/h). determine the average force exerted on the ball by the bat
The index of refraction for crown glass is 1.512 at a wavelength of 660 nm (red), what is the angle of refraction for each wavelength
A car is driven east for a distance of 44 km, then north for 22 km, and then in a direction 26° east of north for 20 km. Determine the magnitude of the car's total displacement from its starting point
question you are given a 10-mh inductor and 2 capacitorsof 5.0 and 2.0-mf capacitance. list the resonant frequencies
This is an "explosion" question. A 30-06 caliber hunting rifle fires a bullet of mass 0.0115 kg with a velocity of 361 m/s to the right. The ri?e has a mass of 2.87 kg. What is the recoil speed of the rifle as the bullet leaves the rifle?
If you weigh 670 on the earth, illustrate what would be your weight on the surface of a neutron star that has the same mass as our sun and a diameter of 19.0?
Calculate how much current is required to make the field at the center of a current loop comparable to the magnetic field near one of the poles of a permanent magnet
A 87 arrow is fired from a bow whose string exerts an average force of 120N on the arrow over a distance of 78cm. Evaluate the speed of the arrow as it leaves the bow?
Three uniform spheres are located at the corners of an equilateral triangle. Each side of the triangle has a length of 1.40 m. obtain the magnitude of the initial acceleration of the third sphere
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