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The moon is observed using a telescope that has an objective lens with a focal length of 3.0 m and an eyepiece with a focal length of 7.5 cm. What is the angular diameter of the moon if the earth-moon distance is 3.85 × 108 m and the diameter of the moon is 3.48 × 106 m?
A lady ate a whole medium size pizza storing up 120 food Calories. This energy is used to heat up 2 liters of water from a certain initial temperature to a final temperature of 80 deg.C
Describe the characteristics of the pH scale. Compare and contrast acids and bases. Provide examples of some of the products that you know are basic and acidic in nature
A wheel spinning at 25 rev/s is slowed to a stop by a constant acceleration while turning 50rev. What is the magnitude of the constant acceleration
a worker leaves home at 900 am travels 40 km to the office and then returns home at 500 pm. what is the magnitude of
A 9300 kg boxcar travelling at 23 m/s strikes a second boxcar at rest. The two stick together and move off with a speed of 15 m/s. What is the mass of the second car.
A pellet gun is fired straight downward from the edge of a cliff that is 14.5 m above the ground. How far above the cliff edge would the pellet have gone had the gun been fired straight upward
A bullet with mass 5.44 g is fired horizontally into a 2.103-kg block attached to a horizontal spring. Find the initial speed of the bullet-block system
A jet pilot takes his aircraft in a vertical loop, as seen in figure below. If the jet is moving at a speed of 1450 km/hr at the lowest point of the loop, Determine the minimum radius of the circle
A policeman is chasing a speeding car with a seed of 160 km/hr. the speeding car is moving with a speed of 120 km/hr. what frequency will the driver of the speeding car hear
A small ball of mass 0.60 kg is attached to one end of a 1.15 m long massless rod, and the other end of the rod is hung from a pivot
The helium atom has a volume of about 3 x 30^-30 (m^3). What fraction of a volume of helium gas at STP is actually occupied by atoms
An ac generator consists of a coil with 50 turns of wire, each with an area of 0.02 m2. What is the resistance of the coil
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