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A double convex lens has equal curvature radii of 35 cm. An object placed 30 cm from the lens forms a real image at 136 cm. What is the refractive index of the lens?'
An object glides on a horizontal tabletop with a coefficient of kinetic friction of 0.3. If it comes to rest after 1.3 seconds, what was its initial velocity
A frog in a hemispherical bowl finds that he just floats without sinking in a fluid whose density is 1.35 g/cm^3. If the bowl has a radius of 6cm and negligible mass, what is the mass of frog.
A girl jumps on bike and exerts torque of 25.0 N-m perpendicular to the pedal. Moment of inertia of bike wheel is I = 0.045kg-m^2. What is angular velocity of bike wheel at end of this time
Rigel, a bluish-white star in Orion, radiates with a peak wavelength of 145 nm. Find the temperature of Rigel's surface
A certain lightbulb has a tungsten filament having a resistance of 16 ? at 22°C and 155 ? when hot. Find the temperature of the filament when it is hot
A 1.03 kg mass is attached to a spring of force constant 11.0 N/cm and placed on a frictionless surface. By how much will the spring stretch
At a shooting competition, a contestant fires and a 13.0 bullet leaves the rifle with a muzzle speed of 130. what is the magnitude of the impulse on the target
A 8.0 kg block oscillates with an amplitude of 0.070 m on a light spring constant k= 13 N/m. What is the maximun value of the block's velocity
After a completely inelastic collision between two objects of equalmass, each having initial speed v, What was the angle between their initial directions
Eq: D(x,t) = 2.4sin(0.60x)cos(42t) where x and D are in cm and t is in sec. what is the distance between nodes
An airplane has a mass of 27,000 kg and takes off under the influence of a constant net force of 42,500 N. What is the net force that acts on the plane's 74 kg pilot?
The left face of a bioconvex lens has a radius of curvature of 10.3 cm, and the right face has a radius of curvature of 15 cm. Calculate the focal length of the lens
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