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A thin converging lens has a focal length of 20 centimeter. If an object is located 40 centimeter from the lens, determine is the image real or virtual and where is it located?
Kathy buys a sports car that can accelerate at the rate of 4.9 m/s/s. She decides to test the car by racing with her friend Stan. At what time does Kathy overtake Stan
A 0.2 kg object is suspended from a spring by a spring constant of K=10 N/m. The object moves with simple harmonic motion and has an amplitude of0.08 m. What is the potential energy of the system when the object displacement is 0.08 m?
Two spheres with masses m1 = 820 kg and m2 = 830 kg are separated by 0.230 m. What is the net gravitational force from them on a 3.0 kg sphere located 0.161 m from m1 and 0.069 m from m2? Use a + sign if the direction is towards m2 and a - sign if..
An green hoop with mass mh = 2.8 kg and radius Rh = 0.17 m hangs from a string that goes over a blue solid disk pulley with mass md = 2.4 kg and radius Rd = 0.11 m. What is magnitude of the linear acceleration of the hoop
A spaceship travels at a constant speed from earth to a planet orbiting another star. compute How far away is the planet
Clouds in the tropics tend to move from east to west. Consequently, which rhyme best explains a rainbow seen in the tropics.
An electric dipole has opposite charges of 6.35*10^-15 C seperated by a distance of 0.29mm, Determine magnitude of the torque exerted on the dipole by the electric field.
A 200-Volt battery is connected to a parallel-plate capacitor that has a dielectric slab (k= 2) filling the space between the plates. The plates are 10cm x 10cm and are 3mm apart.
Mountaineers often use a rope to lower themselves down the face of a cliff (this is called rappelling). They do this with their body nearly horizontal, What tension does his rope need to support
Human skin is most sensitive to ultraviolet light of approximate wavelength 300 nm. Find the energy of a single photon of such light
This bat hears its own sound plus the sound reflected by the wall. Explain how fast should the bat fly in order to hear a beat frequency of 10.0Hz?
A string passes over a frictionless pulley and connects a 250 g block to 2.00 kg block. The inclines are frictionless. Assuming you release both masses from rest, how much time would it take the 250g to travel 2200cm next to the ramp.
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