Master Physics with Fun Quizzes & Brain Teasers!

A boat is stationary at 12 meters away from a dock. The boat then begins to move toward the dock withan acceleration of 5.0 m/sHow long will it take the boat to reach the dock?
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A large block of ice in the shape of a cube has a mass of 109 kg. What is the side length of the ice cube in meters? Feet? Recall the density of ice is 0.92 g / cm^3 and 1 meter is equivalent to 3.28 feet.
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Question 4 (5 points)What's the general formula for an alkene if n is the number of carbon atoms
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how does light behaves when light passes through water?
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An m = 7.25 kg mass is suspended on a string which is pulled upward by a force of F = 76.7 N as shown in the figure. If the upward velocity of the mass is 2.25 m/s right now, then what is the velocity 3.50 s later?
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Two rocks are thrown simultaneously from the top of a very tall tower with identical speeds of v = 5.90 m/s, but in two different directions. (See figure.)One of them is thrown with an angle of 17.4 degrees below the horizontal, and the other one is thrown at an angle of 57.6 degrees above the horizontal. How far will the rocks be from each other after 5.45 s? (Neglect air resistance and assume that the rocks will not hit the ground.)
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What is the definition of a vector
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Which unit describes the amount of potential energy that each charge has ina circuit?A. VoltageB. PowerC. CurrentD. Resistance
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Calculate the change in potential energy of a 94.6 kg man when he takes an elevator from the first floor to 12th floor, if the distance between floors is 3.93 m.
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a. A crane at a construction site lifts a concrete block with a mass of m = 277 kg from the ground to the top of a building with a height of h = 22.3 m. How much work did the motor of the crane do? (Assume zero energy loss in the lifting mechanism due to friction.) b. If the duration of the lift was 2.85 minutes, then what was the average power performed by the crane?
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A block with a weight of 620 N is pulled up at a constant speed on a very smooth ramp by a constant force. The angle of the ramp with respect to the horizontal is = 23.5 and the length of the ramp is l = 14.1 m.Calculate the work done by the force in pulling the block all the way to the top of the ramp. (Neglect friction.)
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An athlete, swimming at a constant speed, covers a distance of 203 m in a time period of 5 minutes and 50 seconds. The drag force exerted by the water on the swimmer is 86.0 N. What is the power the swimmer must provide to overcome that drag force?
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a. In the building there are 133 steps from the ground floor to the sixth floor. Each step is 16.2 cm tall. It takes 6 minutes and 16 seconds for a person with a mass of m = 89.2 kg to walk all the way up. How much work did the person do?b. What was the average power performed by the person during the walk?c. How many food Calories did the person burn during the walk? (1 Cal = 4.1868 kJ. Do not enter unit for this part.)
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A 66.0 kg diver is 2.30 m above the water, falling at speed of 2.20 m/s. Calculate her kinetic energy as she hits the water. (Neglect air friction)
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Consider the three inclines shown in the figure. The vertical line is an incline with a 90 angle. (Inclines with 90 angles do exist!) All three inclines are frictionless. Three small identical objects are released from the top of the inclines. What can we tell about their travel times and final speeds?(Options are: greater than, less than, equal to) The final speed of C is ... that of B. The travel time of A is ... that of B. The final speed of B is ... that of A. The travel time of C is ... that of B. The final speed of A is ... that of C. The travel time of C is ... that of A.
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On a roller coaster ride the total mass of a cart - with two passengers included - is 319 kg. Peak K is at 43.6 m above the ground and peak L is at 24.4 m. At location K the speed of the cart is 16.4 m/s, and at location L it is 12.4 m/s. (The wheel mechanism on roller coaster carts always keeps the carts safely on the rail.) How much mechanical energy is lost due to friction between the two peaks?
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Explain Energy Transformation using the image below and how the Law of Conservation of Energy is maintained.
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A man with 60 years to live wants to visit a distant Galaxy which is 160,000 light years away. What must be his constant speed?
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A large block of ice in the shape of a cube has a mass of 109 kg. What is the side length of the ice cube in meters? Feet? Recall the density of ice is 0.92 g / cm^3 and 1 meter is equivalent to 3.28 feet.
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An individuals actions may be considered either abnormal or understandable within one culture according to the __________ definition.A.personal distressB.maladaptive behaviorC.deviant behaviorD.situational context
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the deepest point in the sea is 100m below sea level .what arr the water pressure at this depth and the total pressure due to water and atmosphere ?
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determine the limiting reactant of this 2Mg(s)+O2(g) 2MgO(s)
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