Physics

Ms. sison is riding his bike and uses 600 joules of energy per minute. if the bike only does 550 joules of work, how efficient is the bike in percent?
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A trumpet plays its 3rd harmonic at 510 Hz. It then opens a valve, which adds 0. 110 m to its length. What is the new 3rd harmonic frequency? (Hint: Find the original length. ) (Speed of sound = 343 m/s) (Unit = Hz)
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Kinetic energy depends only on a system's_Select all that apply>accelerationheightmass2speedvolume
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Question 1 (2 points)Cross training is a type of training routine that combines two or more differentexercises into a workout to prevent injuries, burnout, and overuse.TrueFalse
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Particles q1, q2, and q3 are in a straight line. Particles q1 = -5. 00 x 10^-6 C, q2 = +2. 50 x 10^-6 C
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Imagine you wanted to launch a satellite so that it traveled in the opposite direction from usual that is east to west rather than the west to east.how fast would the rocket launching that satellite have to travel relative to the launching site , if you launched it from a point on the equator
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Newtons Second LawAn elevator is moving up at a constant velocity of 2.5 m/s, The passenger has a mass of 85kg.a. Construct a free body diagram for the passenger.b. Calculate the force the floor exerts on the passenger.The elevator now accelerates upward at 2.0 m/s^2.a. What additional force is needed to accelerate the passenger at that acceleration? what is the direction of this force?b. Construct a free body diagram for the passengerUpon reaching the top of the building, the elevator accelerates downward at 3.0 m/s^2.a. how much net force is needed to accelerate the passenger at 3.0 m/s^2? What does this do to the normal force?b. Construct a free body diagram for the passenger, with the magnitude of each force labeled.While descending in the elevator, the cable suddenly breaks. How big is the force on the passenger by the floor? Explain your answer.
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a train is moving at a constant velocity of 100 mph in a straight line. inside the train, there is a mechanical claw that is holding a ball. the mechanical claw is fixed and rigid and so it does not move as a result of vibrations. furthermore, the claw is located halfway along the ceiling between the front and the rear ends of the car. at one point, the ball is released. please ignore air resistance. there is no wind inside the car. the ball will fall:
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if u can guess all of these you will i mean will get brainno rude answers stuff or report
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In 1992, residents of Arkansas consumed, on average, 11. 4 L of gasoline pervehicle per day. If this amount of gasoline burns completely in a pure combustionreaction, it will release 4. 3 * 10% J of energy. Suppose this amount of energy istransferred by heat from a quantity of gas confined in a very large cylinder. Thecylinder, however, is equipped with a piston, and shortly after the energy istransferred by heat from the cylinder, work is done on the gas. The magnitude ofthe energy transferred by work is equal to one-third the magnitude of theenergy transferred by heat. If the initial internal energy of the gas is 1. 00 x 10J,what is the final internal energy of the gas?
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Horticulture 120 pts (HURRY)Sensing systems incorporated into harvesting machines that register and record amounts of harvests associated with specific portions of a planted field are called monitoring systems
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A generator that is not producing voltage or current may have an open stator winding. True or False?
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Help please!!How many atoms of C would you have if there were 1.23 moles of C? Show your work for this.
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Wave CenerationWhat kind of wave is being generated?O electromagnetic waveOlongitudinalOtransverseOsurface wave
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What is an infrared camera simple definitionIN OWN WORDS!!!!!!!!!!explain like you would to a kid pls
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This model shows DNA, chromosomes, and genes. If B is a cell and C is the nucleus, what is A?
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Apply concepts why can light travel trough outer space but sound cannot?
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What is the intensity of sound 4m away from a 500w speaker?. How much energy is absorbed by the eardrum per minute if the surface area of the ear is 600mm
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Blue jeans (blank) blue light, so that we see them as the color blue.
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Help! I need this within an hour!suppose that a flat loop of wire with an area of 0.050 m2 lies in a magnetic field normal to the loop. if the magnetic field changes at a uniform rate from 0.30 t to 1.5 t it induces an emf of 1.2 volts in the loop. find the time interval for the change. 0.023 sec0.050 sec0.073 sec0.085 sec
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Suppose 10.0 g of ice at -10.0C is placed into 300.0 g of water in a 200.0-g copper calorimeter. The final temperature of the water and copper calorimeter is 18.0C.1) What was the initial common temperature of the water and copper? (Express your answer to three significant figures.)
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A pressure switch is used in a washing machine to control the flow of water. The water pushes on a flexible container and compresses some trapped air. When the pressure of this trapped air reacher 104 kPa, the pressure switch turns the water off. The pressure of the trapped air is given by this relationship: pressure of the trapped air - atmospheric pressure + pressure difference caused by the water. Calculate the height of water in the machine when the pressurre of the trapped air reaches to 104 kPa and the switch operates. (atmospheric pressure = 100 kPa, density of water = 1000 kg/m^3)
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Suppose, in a physics lab experiment, you try to move a box of 5 kg by tying a rope around it across a flat table and pulling the rope at an angle of 30 degree above the horizontal as shown in the figure; i. If the box is moving at constant speed of 2m/s and the coefficient of friction is 0.40, What is the magnitude of F? ii If the box is speeding up with constant acceleration of 0.5 m/s2 ,What will be the magnitude of F?
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During super bowl weekend, the NFL sets up a receiver on a stationary hovercraft. A. 257 kg football is thrown at 9. 76 m/s to a receiver and hovercraft with a total mass of98. 6 kg. When the ball is caught what is the new speed of the system?Do NOT put in units or it will be marked wrong! The answer's value only! Please roundeach answer to 3 places,MaVa + MbVb = (Ma+b)(Va+b)
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