Physics

The density of air is 1.3 kg/m'. Calculate the mass of air in the room.
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How would you explain conduction?
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An engine has an energy input of 125 J, and 35 J of that energy is transformed into useful energy. What is the efficiency of the engine? 28% 35% 72% 90%.
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If a 75 kg box collides with a stationary 35 kg box with a force of 110 N, what must be true of the magnitude of the reaction force?
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A water-skier is being pulled by a tow rope attached to a boat. As the driver pushes the throttle forward, the skier accelerates. A 73.5-kg water-skier has an initial speed of 5.2 m/s. Later, the speed increases to 12.2 m/s. Determine the work done by the net external force acting on the skier.ANSWER FOR BRAINLIEST IF ANSWER IS GOOD
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Find the heat energy is required to change 2Kg of ice at 0 C to water at 20 C ( specific latent heat of fusion of water = 336000 J/Kg and specific heat of capacity of water = 4200 J/Kg C
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Mass can be measured with a triplebeam balance in units ofResourcesA. gramsB. NewtonsC. cubic centimetersD. millimeters
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ChallengeMarks: 1How much energy is transferred by a 500 watt heater that is on for 2minutes?
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2. An object is falling under gravity with terminal velocity. What is happening to its speed?A. It is decreasing to a lower value.B. It is increasingC. It is decreasing to zero.D. It is staying constant.
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19. A beach ball is rolling in a straight line toward you at a speed of 9 m/sec. Its momentum is 3 kg'm/sec.What is the mass of the beach ball? moss - 0.33aroto from 10mle to speed of 14 m/s The mass of the bicycle
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ASAP!!!!!!!! Parts of a Microscope: Use the following word bank to identify the following parts of the microscope. Body TubeOcular Lens ( eye piece)Revolving Nose piece ArmObjectives (three of these) DiaphragmStage clipsStageLight SourceBaseCourse Adjustment KnobFine Adjustment Knob
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An astronomical unit (A.U.) is 1 point A) a term for defining the luminosity of a star B) the average distance from the Earth to the sun C) the average distance of any given planet to the sun D) equal to a light year
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The equation below can be used to calculate a change in gravitational potential energy. What units must be used for h? Give the full name, not the abbreviation.e=m x g x h
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Question 4 of 10When you go along with a group because you don't want to cause trouble, it iscalled:A. informational social influence.B. normative social influence.C. attribution.D. fundamental social influence.
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If a 35 kg box collides with a stationary 120 kg box with a force of 90 N, what mustbe true of the magnitude of the reaction force?
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A car drives 84 meters forward. It's displacement and distance would be the same?
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The magnitude, M, of an earthquake is represented by the equation M=23logEE0 where E is the amount of energy released by the earthquake in joules and E0=104. 4 is the assigned minimal measure released by an earthquake. In scientific notation rounded to the nearest tenth, what is the amount of energy released by an earthquake with a magnitude of 5. 5?.
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How long does it take a car traveling at 45km/h to travel 100.0 m?
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3.2 physics assignment.
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In an action-reaction paira. action force is exerted firstb. action force and the reaction force are equal in magnitude and act in the same direction.c. action force and the reaction force are contact forces only.d. action force and the reaction force act on two different objects.
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A Person is carrying 6kg in one hand and 5kg in another.Calculate the resultant force applied by him
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(0.50kg)(6.0mls)+(1.00kg)(-12.00mls)
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1. List four actions you can take to cope with changing emotions and energy during adolescence.2. Explain how a high self-esteem might affect a persons life.3. Explain how to set priorities, and why setting priorities is important.4. Identify the six keys to setting achievable goals.5. Describe what it means to become mature.
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What is the height of the Golden Bridge?
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