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Mike and Joe take turns pitching a baseball, and Drew catches it. Mike can throw the ball harder than Joe can. Which of the following statements is true? A. The ball requires more force to stop when J
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Based on the diagram of a ball rolling down hill, what statement is true? The ball in box C has less kinetic energy than the ball in box B. B) The ball in box A has more kinetic energy than the ball
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What will happen to plant height if the amount of available light is reduced due to global dimming? Which type of investigation would most likely be conducted to answer the following question?
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A 200 horsepower diesel engine’s BSFC is listed as; 0.5 lbs/hp-hour at full load (200 hp) 0.6 lbs/hp-hour at 75% load (150 hp) 0.7 lbs/hp-hour at 50% load (100 hp) 0.8 lbs/hp-hour at 25% load (5
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Explain what the two teams of astronomers found in the 1990s. What question did their discovery create?
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A hose directs a horizontal jet of water, moving with a velocity of 20m/s, on to a vertical wall. The cross-sectional area of the jet is 5 x 10-4m2. If the density of water is 1000kgm-3, calculate the
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Metal plates of mass 0.1 kg are fired into an iron plate of large mass, m, and specific heat capacity, c, at a temperature of 15 degrees. 25% of the kinetic energy of the pellets is converted to therm
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A 4-kg object falls vertically a distance of 5m. Its potential energy has changed by approximately how much?
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An oil fired steam generator is connected to a steam engine which produces 50kw of power when using oil of energy content 47mj/kg at a rate of 19.9kg/h.steam temperature is500c and cooling water tempe
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Hello everyone Can anyone please help me in answering these questions as soon as possible Thank you
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The modern cars, air condition, cutting tools, drill machine, laptop and aeroplane made of what material ?
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The ball has joules of potential energy at point B. At position A all of the energy changes to kinetic energy. The velocity of the ball at position A is meters/seconds. Assume theres no air resistance
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4. Which of the following is a way that some animals bodies adapt to living in extremely cold climates
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500-g weight, a spring scale, dynamic cart, a digital timer, a pulley, a thermometer, and a graduated cylinder. Which set of equipment would best utilize Newton's Second Law to find the mass of the dy
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Why is history open to ongoing and changing interpretations?Changing values limit interpretation.New evidence is not available.Primary sources are determined to be unreliable.Revisionists are overrule
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Terminal velocity is the velocity of _______ A. a falling object when it starts to break apart B. an accelerating object when it hits the ground C. an object falling in a vacuum (an environment wit
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The sound strikes the cantina walls and bounces off at the same angle as it struck in a process known as _____.
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Measuring the temperature of very cold substances can be challenging. Here is one way to measure the temperature of liquid nitrogen. A 50-g flake of aluminum is submerged in liquid nitrogen and left i
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Music played in front of the bandshell is clear and audible for a surprising distance in front of the bandshell. Why is this the case? Explain
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What is the wavelength of an x-ray photon with energy 7.0 kev (7000 ev)? (1 ev = 1.60 × 10−19 joule.)?
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Two charges are located in the x–y plane. if q1 = -3.50 nc and is located at x = 0.00 m, y = 0.800 m and the second charge has magnitude of q2 = 5.00 nc and is located at x = 1.50 m, y = 0.800
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The specific heat of a certain type of cooking oil is 1.75 j/(g·°c). how much heat energy is needed to raise the temperature of 2.94 kg of this oil from 23 °c to 191 °c?
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The mass on a spring is quadrupled. how will this affect the frequency at which the spring will oscillate?
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The ducts of an air heating system pass through an unheated area. as a result of heat losses, the temperature of the air in the duct drops by 3 c. if the mass flow rate of air is 90 kg/min, determine
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Refrigerant r-22 is compressed adiabatically from a saturated vapor at 20 f to a final pressure of 200 psia. determine the minimum work requirement
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Calculate the enthalpy change, δh, for the process in which 10.9 g of water is converted from liquid at 13.8 ∘c to vapor at 25.0 ∘c . for water, δhvap = 44.0 kj/mol at 25.0 ∘c and
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At what distance along the central axis of a uniformly charged plastic disk of radius r = 0.400 m is the magnitude of the electric field equal to 1/5 times the magnitude of the field at the center of
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Astronomers discover a planet orbiting around a star similar to our sun that is 32 light years away. how fast must a rocket ship go if the round trip is to take no longer than 64 years in time for the
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A plastic rod 1.3 m long is rubbed all over with wool, and acquires a charge of -3e-08 coulombs. we choose the center of the rod to be the origin of our coordinate system, with the x-axis extending to
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241Pu decays either by electron decay or by alpha decay. (A given 241Pu nucleus may do either one; is random.) what are the isotopes created as products of these two modes of decay?
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A wire etched onto a computer chip carries a current of 0.000000044 A. In 1.8 milliseconds, how many electrons flow past a point on the wire?
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When a car is 2 0 0 meters from its starting position traveling at 30 . m/s., it starts braking and comes to a stop 350 meters from its starting position in 10 . s. Calculate the acceleration.
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A car is traveling 80km/h is 130m behind a truck traveling at 75km/h. How long will it take the car to reach the truck?
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The wavelength and energy of a wave are inversely proportional. Based on this, which wave listed would have the LOWEST energy. A) wave with wavelength of 600 m B) wave with wavelength of 600 cm C) wav
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An experiment is designed to compare the differences in learning outcomes between learning math from s video game and learning it from traditional classroom activities. the experiment finds no differe
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Suppose that a passenger intent on lunch during his first ride in a hot-air balloon accidently drops an apple over the side during the balloon’s liftoff. At the moment of the apple’s release, the
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The forklift excerts 1500.0 N of force on the boxand moves it 3.00 M forward to the stack. how much work does the forklift do against the force of gravity?
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Forces: What’s Going to Happen? Take a look at this box and the forces acting on it. box with forces acting on it Will the box move, and if so, how will it move? Answer the following questions. 1.
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A hot air balloon of mass 80 kg has a passenger of mass 62 kg. The hot air balloon is at a height of 150m moving at a speed of 18m/s. The total mechanical energy of the balloon and its passenger is __
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An 18-year-old runner can complete a 10.0-km course with an average speed of 4.37 m/s. A 50-year-old runner can cover the same distance with an average speed of 4.19 m/s. How much later (in seconds) s
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Tom pulls a muscle. He has to stop working to get an ice pack. Claudia continues to work and soon finishes her pile. Power is the rate of doing work. It’s calculated by dividing work by time (power
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What magnitude point charge creates a 10,000 N/C electric field at a distance of 0.250m? how large is the field at 10m?
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From the beginning of a life to before death, which is the correct order of stages during the life cycle of a koala? A. fertilization --> birth --> joey in pouch --> joey with mother --> joey on its
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In a model of earths layers that is determined by physical properties how might the atmosphere be classified want to be part of the lithosphere or a separate layer explain your answer
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What amount of heat is required to increase the temperature of 75.0 grams of gold from 150°C to 250°C? The specific heat of gold is 0.13 J/g°C.
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Hich object could she include in her story so the character can see his own face and confirm he has really turned into a mouse
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Suppose that 6 j of work is needed to stretch a spring from its natural length of 24 cm to a length of 36 cm. (a) how much work is needed to stretch the spring from 29 cm to 31 cm? (round your answer
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If the supplied force f = 150 n, determine the velocity of the 50-kg block a when it has risen 3 m, starting from rest.
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Hey! Can someone help with this question? Thx :) What type of energy transformation takes place when carbon is cycled during cellular respiration? A. Chemical energy to chemical energy B. Chemical ene
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A 65.0 kg firefighter climbs 12 flights of stairs that are each 4.0 m high. How much work is required
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