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The luminance of direct sunlight on Earth is about 105 lm/m2.
(a) Determine the luminous flux of the Sun.
(b) Determine the luminous intensity of the Sun.
A frictionless block of mass 2.35 is attached to an ideal spring with force constant 250 . At the spring is neither stretched nor compressed and the block is moving in the negative direction at a speed of 11.5 .Find the amplitude. Find the phase angl..
An elevator is able to raise 1,000 kilogram to a height of 20 meter in10 second. Calculate how much work does the elevator do
A 4.000 liter container is filled to the brim with ethanol at 20.0 °C. The container is heated to 30.0 °C. What is the volume expansion coefficient of the container material
a long straight but hollow wire carries a current i uniformly distributed throughout its area excluding the hollow. the
What is the net force acting on a 5-kg objest falling on earth, what is the mass of object on moon
When striking, the pike, a predatory fish, can accelerate from rest to a speed of 4.1m/s in 0.15s, How far does the pike move during this strike
A ball with mass 450 grams hangs from a spring that is hanging from a ceiling. The spring's stiffness is 110 Newton’s/meter and its relaxed length hanging from the ceiling by the ball is 12.7 cm. What would be the relaxed length of the spring if the ..
A submarine dives to a depth of 190 feet in the ocean. What is the force in pounds acting on a hatch that has a area of 3.7 square feet
Two metal blocks are attached by a cable as shown in the figure below and are submerged at rest near the surface of a lake. what is the total buoyant force on the two blocks
A cart mass M moves on a frictionless track. It is attached to a string, which goes over a pulley wheel & has a mass m hanging from it. At t=0 s the cart starts from rest & accelerates. Find the tension in the sting & acceleration of the cart.
A coil with inductance 370 mH is connected in series with a 220 ohm resistor, a 47.0 microF capacitor and a 25.0 V, 60.0 Hz AC source. Find the total impedance in this circuit
One lens of a nearsighted person's eyeglasses has a focal length of -21.7 cm, and the lens is 1.70 cm from the eye. what should be the focal length of the corresponding contact lens
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