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A convex lens with the focal length of 85cm creates an image with magnification factor M = -4. Then find the distance between the object and image formed by the convex lens?
You discover a new extra-solar planet orbiting a 1 solar mass star using high spatial resolution imaging and adaptive optics in the infrared part of the spectrum. What is the planet-star separation if you measure an angular separation of 0.6"
Two parallel wires, each of length 1m, are separated by 2 cm, and carry current in opposite directions. Wire A is 10 Amps upwards and wire B is 5 Amps downwards. Find the force on wire B due to wire A in Newtons.
An airplane is cruising along in a horizontal level flight at a constant velocity, heading due west. If the weight of the plane is 2.6´104 N, what is the net force on the plane
You switch from a 1.40NA 60x oil immersion objective to a 0.5NA 20x air immersion objective. What is the acceptance angle (in degrees) for the oil immersion objective
A 2,200-kg car moving east at 10.0 m/s collides with a 3,000-kg car moving north. Find the speed of the 3,000-kg car before the collision
A converging lens of focal length 20 cm is used to form a real image 1.0 m away from the lens. How far from the lens is the object
Two 34 charges are attached to the opposite ends of a spring of spring constant 150 and equilibrium length 50. By how much does the spring stretch
A train is travelling up a 3.2 degree incline at a speed of 3.25 m/s when the last car breaks free and begins to coast. How long does it take for the last car to come to rest.
The force on a magnetic moment µz in a nonuniform magnetic field Bz is given by Fz = µz(dBz/dz). If a beam of silver atoms travels a horizontal distance of 1.00 m through such a field and each atom has a speed of 142 m/s, how strong must be the field..
Two identical probes are sent along the same path toward a neutron star. A neutron star is very dense, packing as much as 2 solar masses into a sphere with a radius on the order of 10 km. At the moment shown, the two probes are 59.7 km and 133 km ..
With brakes fully applied, a 1550 kg car deccelerates from a speed of 78.0 km/hr. What is the change in the kinetic energy of the car
Compute the velocity of the ball at the instant in which the it leaves the spring. Compute the velocity of the ball at the moment it hits the ground. Does the length traveled on the table matter? Why?
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