A cook heats up food from 20 °C to 120 °C with the thermal energy of 500000 J, the heat capacity of the food would be   −10000 J K-1   −5000 J K-1   10000 J K-1   5000 J K-1

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A: Here we have to answer what is measured by kW.h unit.

Q: A stationary square coil of area 0.1 m2 is brought into the magnetic field 8.2 T with its plane…

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Q: The crew of an enemy spacecraft attempts to escape from your spacecraft by moving away from you at…

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Q: charge ??=1.6×10−19qp=1.6×10−19 that moves at right angles to the direction of a uniform magnetic…

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Q: An electric saw at a local hardware store features a motor that supplies 15 A. Find the resistance…

A: Given Current in the electric saw is i=15 A Voltage of the outlet is V=110 V   We have to find the…

Q: Which of the following quantities best describes the magnetic field strength at the surface of the…

A: The magnetic field of the earth is varies from 30000nT to 60000nT. It is minimum  at equator which…

Q: While thinking about torques on a balanced a seesaw with two kids sitting at its ends, a student…

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Q: Light with wavelength å passes through a narrow slit of width w and is seen on a screen which is…

A: D=2.4 md=1 mm = 1 x 10-3 mw=λD  the definitions of D,d and w can be observed in the question

Q: A mass of 11.2 g is suspended from a massless spring of natural length 90 mm with the spring…

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Q: SA3) A 6-m uniform rod is acted upon by different forces at different points as shown in the…

A: A) Apply the equilibrium condition of forces along the vertical direction to determine the resultant…

Q: ates at the end of an ideal spring with force constant 25.0 N/cm on a frictionless horizontal air…

A: Given:-  The spring constant [ force constant ] k = 25.0 N/cm = 25 x 102 N/m  The acceleration of…

Q: 2 protons released in what step of solar nuclear fusion? a. step 1 b. step 2 c. none of the steps d.…

A: Answer:- (d) step 3    2 protons released in step 3 of solar nuclear fusion.  Because   Two protons…

Q: 3. In the figure below, the coefficient of sliding friction for all contact surfaces is 0.20. When…

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Q: Describe in a paragraph how a capacitor charges and discharges through a resistor as a function of…

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Q: A parallel-plate capacitor consists of two identical, parallel, conducting plates each with an area…

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Q: an incline plane lab, a ball is accelerated along the incline.  At a distance of 1.00 meters, the…

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Q: Find the value of force applied if work done is 220 J and displacement is 20 m

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Q: Two trains on separate tracks move toward each other. Train 1 has a speed of 129 km/h; train 2, a…

A: Given, speed of the train 1 (observer), vo = 129 kmh speed of train 2 (source), vs = 89.0 kmh…

Q: The mass of a substance, which follows a continuous exponential growth model, is being studied in a…

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Q: ack to eadec ca ес

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Q: Which situation demonstrates a positive work done?

A: situation demonstrates a positive work done

Q: 4. Given km/hr to 20.0 km/hr in 6.00 seconds. A vehicle changes velocity from 80.0 Required: Find…

A: Given:- Initial velocity of the vehicle is vi=20.0 km/h Final velocity of the vehicle is vf=20.0…

Q: Based on the given Nyquist plot, answer the following questions 1. Plots A, B, and C represent three…

A: (1)[A] - represents electrostatic capacitors. [B] - represents pseudo capacitors. [C] - represents…

Q: Determine the distance between the electron and proton in an atom if the potential energy U of the…

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Q: Consider a straight conductor of length 6.1 cm. The conductor moves at Pight generating e.m.f. of…

A: Given L=6.1 cm=0.061 mB=10-3 Te.m.fε=2.5×10-5 V

Q: Write down an expression for the magnetic flux in terms of the magnetic field B and area A enclosing…

A: Write the expression for the magnetic flux. Here, B is the magnetic field and A is the area.

Q: When is pressure and velocity negligible in the Bernoulli's equation?

A: When is pressure and velocity negligible in the Bernoulli's equation?

Q: QUESTION 21 The diagram below shows two parallel wires with the top wire carrying a steady current…

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Q: A stationary square coil of area 0.1 m² is brought into the magnetic field 5.6 T with its plane…

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Q: 2) Rtot IB A Itot = V tot VR = A.5 9.7 8 8.0 2 Ic = IA = Vc = VA = Show working here: 32 V

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Q: Calculate the current in the resistor R4, given that R = 42 ohm and battery EMF = 9. (Ignore…

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Q: The amount of energy that falls on a given area every second, at the Earth is called:   magnitude.…

A: Energy is incident on Earth surface from Sun .

Q: SA3) How much force is needed to put a 3000-kg vehicle to rest if initially moving at 16.67 m/s and…

A: suppose the applied force creates an acceleration of "a"  then force F = Ma initial velocity u=16.67…

Q: A solenoid that is 137 cm long has a radius of 1.57 cm and a winding of 1550 turns; it carries a…

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Q: Write down an expression for the magnetic field flux & in terms of the magnetic field B and the area…

A: Magnetic field = B Area enclosing this field = A

Q: A parallel-plate capacitor with area 0.220 m2 and plate separation of 4.40 mm is connected to a…

A: As per the answering guidelines we will solve first three Parts. Please upload rest of the parts…

Q: Light with wavelength i passes through a narrow slit of width w and is seen on a screen which is…

A: Write the expression for the distance of first minima from the central fringe. Here, m is the…

Q: You are heating up 27kg of liquid water from 41 degrees Celcius to 50 degrees Celcius.  a.) What…

A: Given:mass of water, m = 27 kgphase of water, liquidinitial  temperature, Ti = 41oCfinal…

Q: while playing squash, a ball of mass 0.500 kg with speed 15.0 m/s collides with a wall and bounces…

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Q: What is the kinetic energy of a 1500 pound car travelling at 40 meters per second?

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Q: Gimen dafe Maxe = 280 kg. Veleidy = 40 mls Find Kinetic energy

A: Given data:  Mass (m) = 280 kg Velocity (v) = 40 m/s Required: The kinetic energy (KE)

Q: 14. Saturn's rings a. were created by its incredibly large gravitational capture of asteroids and…

A: Correct option (a). were created by its incredibly large gravitational capture of asteroids and…

Q: A lightbulb in a home is emitting light at a rate of 120 watts. If the resistance of the light bulb…

A: Given data:  Power (P) = 120 W Resistance (R) = 15.0 Ω Required: Current (I)

Q: Capacitor - Potential/Field The given figure is a parallel plate capacitor having two parallel Cu…

A: (1) the change in voltage is - 3.783v (2) the amount of charge stored in the capacitor with SiO2…

Q: A straight conductor of fixed length I is moving at 45 degrees to a uniform magnetic field of…

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Q: The density of aluminum is 2700 kg/m3. If transverse waves propagate at 38 m/s in a 4.6 mm diameter…

A: Given: The density of the aluminium is 2700 kg/m3. The speed of the wave in the wire is 38 m/s. The…

Q: are some tasks performed by the nervous system

A: Reception of general sensory information (touch, pressure, temperature, pain, vibration) Receiving…

Q: How much current is flowing through a wire if 21.5 C of charge passes a point in 6.3 seconds?

A: Given data:  Charge (q) = 21.5 C Time (t) = 6.3 s Required: Current (I)

Q: Calculate the period of oscillation of a pendulum on a planet of density pp = 10 kg m3 with radius…

A: The time period of the second's pendulum is given by                                T  = 2πlg Where…

Q: 3) Ic = Vc = Ip = VD = IE = Rtot = Itot = E D Vtot = 9.5 0 3.6 0 IA = C B VA = 12 2 10 2 18 N IR =…

A: A basic electrical circuit consists of a voltage source and resistances. Ohms law states that…

First law of Thermodynamics

The word thermodynamics consists of two words: thermo- and dynamics. Dynamics means the study of motion. The field of thermodynamics is all about the study of the movement of heat. In a more meaningful way, it is stated as the study of the transfer of energy. Energy transfer is something that we encounter in day-to-day life. Automobiles, chemical reactions, refrigerators, and power generators work on the basis of thermodynamic principles.