The temperature inside a Carnot refrigerator is 7.89°C. What is the high temperature, Th, in Celsius needed to give this refrigerator a coefficient of performance of 10.70?

Q: What is the radius of the 3rd orbital in hydrogen? [?] × 10²] m

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Q: A particle with 4 nanoCoulomb charge produces an electric field with a magnitude of 2.0 NA w far…

A: Givencharge, Q=4 nCElectric field, E=2 N/C

Q: If acceleration due to gravity is 12 m/s², what will be the potential energy of a body of mass 2 kg…

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Q: C A uniform horizontal beam, connected to the rigid wall with a pin joint, has a span of 10.0 m and…

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Q: In a lab, a foot-long test tube contains gasoline (density equal to 748.9 kg/m³) and oil (density…

A: GivenLength of test tube, h=1 foot=0.3048 m Density of Gasoline, ρg=748.9 kg/m3Density of oil,…

Q: As shown, a projectile of weight W is fired from perpendicular to the inclined plane. It lands at a…

A: Givens=70 m

Q: Light of frequency 1.40 x 1015 Hz strikes a surface, causing photoelectrons to leave with a KE of…

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Q: As shown below, a 148 N block on a ramp is attached to a string that has a tension of 56 N. The…

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Q: b) A metal is impacted by photons of wavelength 375 nm and electrons are emitted from its surface.…

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Q: If we had 24A of current running through a series system when an additional resistance is added,…

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Q: An 800kg car accelerates from 54kph to 90kph as the engine is providing 40hp to drive the wheels.…

A: mass of the car (m) = 800 kg initial velocity (u) = 54 kph final velocity (v) = 90 kph power (P) =…

Q: An electric toaster operating on 120 volts draws a current of 15 amperes. The resistance of the…

A: Data we have  Voltage across toaster=120v current through toaster=15A To find  Resistance of…

Q: migrating salmon heads in the direction N 45 degrees * E swimming at 2.m/h relative to the waterThe…

A: migrating salmon heads in the direction N 45 degrees * E swimming at 2.m/h relative to the waterThe…

Q: Calculate the velocity of a neutron whose kinetic energy is four times its rest energy. Rest energy…

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Q: Determine the momentum of a car having mass 20 kg moving with a velocity 8 m/s

A: Given Mass of a car = m = 20 kg Velocity of car = v = 8 m/s We have to calculate momentum of the car

Q: A helicopter is rising vertically from the ground at a constant rate of 4.5 meters per second. When…

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Q: A person pushes a lawnmower horizontally for 8.50 m by applying a force of 125 N along with the…

A: Given data:  Distance (d) = 8.50 m Force (F) = 125 N Angle (θ) = 36.0° Required: The work done (W)

Q: 3. A total resistance of 3 ohm must be produced by combining an unknown resistor R with a 12 ohm…

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Q: One side of a lens is convex with radius of curvature 30 cm. The other side is concave with radius…

A: Given data: The radius of curvature of convex lens is Rconvex=30 cm. The radius of curvature of…

Q: The switch in the circuit below has been open for a very long time. If L is 8.04 Henries, the…

A: The current I2 at the moment switch is closed is 0.63 Amperes.

Q: To maximize the magnification of a telescope, what is the best combination of the focal lengths of…

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Q: What is the strength of an electric field 20 cm away from a source charge of 8.5 μC? A 1.7 x 10-6N…

A: Given that                     The electric charge (q) = 8.5μC = 8.5×10-6C  We need to find the…

Q: Two particles are fixed to an x axis: particle 1 of charge q₁ = 1.87 x 108 Catx=19.0 cm and particle…

A: Given data: The charge at x1=19.0 cm is, q1=1.87×10-8 C. The charge at x2=63.0 cm is, q2=-5.76q1.…

Q: Calculate the total resistance of the circuit shown below. Show your work. 31 Ω 27 Ω

A: R1 = 27 ohm R2 = 31 ohm arrangement type : parallel

Q: A circular coil of 20 turns and radius 10 cm is placed n a uniform magnetic field of 0.10 T normal…

A: Torque is the rotational equivalent of linear force. Here, we calculate  the given as follow;

Q: Superman must stop a 105-km/h train in 100 m to keep it from hitting a stalled car on the tracks.…

A: GIVEN Speed of train = 105 km/hr Distance traveled = 100 m Mass of the train = 3.6 x 105 kg To find…

Q: Complete solution and answer must be simplified. A particle is moving on a straight line has…

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Q: A 5 W, a 20 W, and a 25 W resistor are connected in series and placed across a 120 V potential…

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Q: A 4.5-kg plastic tank that has a volume of 0.38 m³ is filled with liquid water. What is the weight…

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Q: A projectile is fired with an initial speed of 75.2 mps at an angle of 34.5 degrees above the…

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Q: In 1996, NASA performed an experiment called the Tethered Satellite experiment. In this experiment,…

A: The motional emf generated between the ends of the wire is 6675.9V.

Q: Calculate the ratio of the mechanical energy at B and mechanical energy at A (EB/EA) and (EC/EB).…

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Q: A +2C point charge enters a region of uniform magnetic field of 10T with a velocity of 5 m/s at an…

A: Moving charged particle represents equivalency to current, and thus it is affected by the magnetic…

Q: The Sun generates energy by p-p proton-proton chain nuclear fusion.  The second step of p-p chain…

A: 2H + 1H → 3He + energy . In this process the lost mass converted into energy.  Lost mass = mass of…

Q: It is the STRONG NUCLEAR FORCE of the neutron that keeps the nucleons of the atom together if…

A: relative strength of nuclear force = 1relative strength of electromagnetic force = 1137relative…

Q: Calculate the potential energy of a ball having mass of 10 lbs on top os Stinson building at a…

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Q: You cut the tail spring off and meausre the spring force constaant and determine it to be 42.5 N/m.…

A: Given , Spring constant (k) = 42.5 N/m  Mass attached to spring (m) 1.35 kg  We want to find period…

Q: A scuba diver is sitting on a boat while waiting to go on a dive and sees light reflected from the…

A: Given: Index of refraction of water, n=1.333 To determine angle of reflection for complete…

Q: What is the equivalent capacitance of 64.7 uF connected in parallel?

A: The capacitance is given as C=64.7 μF

Q: An SHO has a period of 55.4 s when its amplitude is 55.8 m. If its amplitude is INCREASED by a…

A: GivenTime period, T=55.4 sAmplitude, A=55.8 m

Q: What is the speed of sound in air at 32.3°C?

A: GivenT1=32.3°C=32.3+273=305.3 K

Q: A pitching machine is programmed to pitch baseballs horizontally at a speed of 134 km/h. The machine…

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Q: A digital clock has a 1.2x10 4 2 resistor and is connected to a 115 V source. How much power does…

A: Given  Resistance (R) = 1.2 × 104 Ω Source voltage ( V0 ) = 115 V  Power is given by :- Power (P) =…

Q: A steam fan in a thermal power plant has a moment of inertia of 3 kg ∙ m2 about its axis of…

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Q: Find the intensity level in decibels for sound with intensity of 6.7x10-7 W/m². Express your answer…

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Q: A state-of-the-art proton decay experiment is expected to detect 47% of the proton decays in a body…

A: We will need 1536.83 m³ of water in order to see 2 deacys per month.

Q: A rock climber throws a small first aid kit to another climber who The initial velocity magnitude of…

A: GivenInitial velocity of kit, u=11 m/sangle ,θ=65°

Q: A force of 200 N is applied to an object of area 4 m² Calculate the pressure ?

A: A force of 200N is applied on an object of area 4m^2

Q: What is the coefficient of performance of an ideal heat pump that pumps heat from a cold temperature…

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Q: A transformer is designed to step down the 220 V. line voltage to 31 V. If there are 1115 turns on…

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