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A lens is made of a transparent material having an index of refraction of 1.5. One side of the lens is flat, and the other convex with a radius of curvature of 28 cm. (a) Find the focal length of the lens. (b) If an object is placed 120 cm in front of the lens, where will the image be located?
In compressing the spring in a toy dart gun, 0.4 J of work is done. What is the dart's kinetic energy as it leaves the gun
A 15kg block is at the top of a smooth incline that is 20 degrees with respect to the horizontal and is 75 m in length. How far down the incline did it slide
q1. determine the tension in each cable if the boat has a mass of 490 kg and the angle of each cable is 50 degrees from
a a football player kicks a football in a field goal attempt. when the football reaches its maximum height what is the
A spherical object has an outside diameter of 52.0 cm. Its outer shell is composed of aluminum and is 2.40 cm thick. What is the object's average density
In brief explain the changes that the Sun will go through after it exhausts its core hydrogen. Be sure to describe both the changes occurring in the Sun's core and the changes visible from outside the Sun. What do we mean by the stages we call hydrog..
A block of mass m1 = 1.75 kg and a block of mass m2 = 5.90 kg are connected by a massless string over a pulley in the shape of a solid disk having radius R = 0.250 m and mass M = 10.0 kg. These blocks are allowed to move on a fixed block-wedge of ..
A person of mass 50 kg rides a loop the loop (vertical circular track) at an amusement park. find the normal force exerted at the bottom of the loop
You found the distance that you will cover at the same time as braking. You can utilize the expected amount of time for braking to check your answer for distance.
A ground state hydrogen atom absorbs a photon of light having a wavelength of 93.06 nm. What is the final state of the hydrogen atom
The mass of a copper atom is 1.54 10-25 kg, and the density of copper is 8 920 kg/m3. Find the edge dimension of each cube
a car is initially moving at 60 ms and must stop in 100 m. what minimum constant acceleration must the car
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