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Question: Explain why a new moon and full moon occur every month, whereas eclipses occur only about once every 6 months. In your answer, describe in detail how the "line of nodes" of the orbits allows eclipses to occur. Why does an eclipse not happen every month?
A blackbody will emit less energy at higher frequencies.
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 ..
1. Is this true or false please explain in paragraph form. The four equations of kinematics are not useful in describing vibration motion. 2. Is this true or false please explain in paragraph form. A vibrating system has maximum total energy when..
A disk rotating at 8 rad/s is accelerated at the rate of 1.8 rad/s2 for 7 s. What is its new angular speed? Find the angle through which it rotated during the acceleration.
q1. a planet of mass 6.00 1025 kg is in a circular orbit of radius 2.00 1011 m around a star. the star exerts a force
A gear train is to be designed to transmit power from shaft 1 to shaft 2 with the following condition: Shaft 1 (driven by an electric motor) rotates at 100 revs min%u20131. Determine the input power required at shaft 1
Explain the distinction between an ohmic and non-ohmic material, in terms of how the current and resistance behave as the voltage difference.
A 1.10 kg mass is at the center of a uniform spherical shell of mass 1.07 1020 kg and radius 1.05 106 m. Find the resultant gravitational force on the mass
Someone will carry two different load mA = mB = 30 kg and 50 kg. The second load was attached to the ends of massless rod of length 2 m. What is the distance the shoulders of bearers with mA load will be in balance?
A solid cyclinder of mass 2.0 kg and radius 0.2 m is rotating uniformly at an angular velocity 2.0 rad/s around the fixed axis through the center O. What is the moment of inertia of the cyclinder
A 2.5 kg object is attached to a horizontal spring of force constant k = 4.1 kN/m. The spring is stretched 10 cm from equilibrium and released. Find the maximum acceleration
A uniform electric field exists in the region between two oppositely charged plane parallel plates. Find the magnitude of this electric field
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