Explain the connection between the Zeroth Law of Thermodynamics, temperature, thermal equilibrium, and temperature scales.
Q: The only natural satellite of India is the moon. a) True b) False
A: True
Q: Work is a _______ a) Scalar quantity b) Vector quantity c) Foreign quantity d) Magnitude less quanti...
A: A
Q: 5-
A: From the given information the string is struck in Ac note f=256 HzLength of this piano string is ...
Q: The moment of inertia of a ring about a tangent is 4kgm2. What is the moment of inertia about an axi...
A: B
Q: a point moving in space has an acceleration of 3sin(t)i+3cos(t)j+6k has a velocity of i+3j+6(pi)k at...
A: Given: The equation for the acceleration a = 3sint(i)+3cost(j)+6(k). The velocity at π s v = i+3j+6...
Q: The work-energy theorem is valid only for positive work done. a) True b) False
A: B
Q: geostationary satellite is orbiting the earth at a height of 4R above the earth’s surface. The time ...
A: A
Q: Gravitational force is the strongest fundamental force. a) True b) False
A: B
Q: What is the minimum velocity required for an object of mass “m” to escape the gravitational pull of ...
A: D
Q: Two particles A and B, initially at rest, start moving towards each other under a mutual force of at...
A: A
Q: 1000 kW of power is supplied to a motor. 90% of this is transmitted to a machine operating at 80% ef...
A: C
Q: The change in the total energy of a body moving because of work being done on it is attributed by th...
A: C
Q: bucket filled with water weighing 20 kg is raised from a well of depth 20 m. If the linear density o...
A: C
Q: work done on a body of mass 5 Kg is 70 J. What is the magnitude of the force applied if the total di...
A: A
Q: The potential energy of an object cannot be increased by internal forces. a) True b) False
A: The potential energy stored energy on the base of their positions, arrangements, or the state of a...
Q: Select the correct option. B is bulk modulus. a) Bgas > Bliquid > Bsolid b) Bliquid > Bgas&...
A: we know that bulk modulus B=-V∆P∆V --------eqn(1) if change in pressure ∆P is same for solid, liquid...
Q: Find the center of mass and the moment of inertia for the specified region between the parabola y = ...
A: let say region has uniform areal mass density =σ kg/m2 given y=x2b⇒x=by1/2 from the figure we can se...
Q: Let the radius of the earth be R. Now, assume that the earth shrunk by 20% but the mass is the same....
A: Given: The radius of earth shrunk by 20%. The mass is same. To determine: The new value...
Q: Two cylinders have the same mass and radius. One is hollow and the other is solid. Which one will ha...
A: A
Q: From Kepler’s law of orbit, we can infer that the sun is located _____ of the planet’s orbit. a) at ...
A: B
Q: The time period of a simple pendulum on the surface of the earth is “T”. What will be the time perio...
A: C
Q: Why do the astronauts in the international space station experience weightlessness? a) The accelerat...
A: N
Q: Stress, like pressure, is always perpendicular to a plane. True or False? a) True b) False
A: B
Q: For a satellite with an elliptical orbit and not a circular orbit, the potential energy varies with ...
A: A
Q: Dr D' (a) (b) E. (c) (d)
A: If two inputs A, B are connected to an OR gate then the output X is X=A+B If two inputs A, B are con...
Q: How much should a spring of indefinite length be compressed to have a potential energy equivalent to...
A: PE of ball = m x g x h = 6 x 10 x 120 = 7200 J PE of spring = 1/2 x k x d² Given; PE of ball = P...
Q: wire has a young’s modulus of 105N/m2, length 1m & radius 3mm. Assuming a uniform cross sectiona...
A: A
Q: An elevator weighing 5.8 KN is ascending with an acceleration of 3m/s?. The operator is standing on ...
A: Let W denotes the elevator weight, w denotes the apparent weight of the operator, m denotes the mass...
Q: The potential energy of an object maximises as its velocity increases. a) True b) False
A: This is a problem related to Work, Energy, and Power. Potential energy: Potential energy is defined ...
Q: Polar satellites are used for high-resolution imaging of the earth’s surface because _____ a) they h...
A: c
Q: Kepler’s laws of planetary motion were proposed only for _____ a) our sun b) any star in our galaxy ...
A: A
Q: Consider two perpendicular axis in the plane of a planar body, such that I1 = 2 I2. The moment of in...
A: c
Q: A steel rod 250 mm long and 200 mm in diameter is being reduced to 190 mm in diameter all over its l...
A: Given:- length of rod L=250mm initial diameter D0 =200mm final diameter Df = 190mm Davg=195mm spindl...
Q: At steady state, a power cycle of an electrical powerplant receives energy by heat transfer at an av...
A: Assuming the working temperature of the power plant to be 540° - 25°C. The efficiency of the plant i...
Q: Choose the correct option regarding a streamline. a) Speed, not velocity, at all points of a streaml...
A: C is
Q: The maximum value of gravitational potential energy is zero. a) True b) False
A: Answer:- Option (a) correct True.
Q: The momentum of a system can be changed without changing its kinetic energy. a) True b) False
A: Express the relation for the momentum as: p=mv ........... (1) Here, m is the mass of the object and...
Q: disc is purely rolling down an inclined plane of length ‘l’ & angle θ. What is the value of fric...
A: C
Q: 139,6 MeV/c², resting in the laboratory, A pion of positive electric charge (n*) and mass m, = decay...
A: Given data, Rest mass ofπ+=139.6 MeVC2rest mass of μ+=105.7 MeVC2rest mass of νμ=0
Q: A pump with an efficiency of 15mm% is used to pump water from a tank (stationary water inside) at th...
A:
Q: The acceleration due to gravity on the surface of the earth is _____ a) greater towards the equator ...
A: B
Q: The velocity of a planet is the greatest at perigee. a) True b) False
A: A
Q: 10kg object is raised to a height of 20m. What is the magnitude of its potential energy? (Assume g =...
A: D
Q: The angular momentum vector of a particle about a point on the rotational axis is parallel to its an...
A: B
Q: Gravitational force is _____ a) an imaginary force b) a long-range force c) a short-range force d) t...
A: Given, Gravitational force
Q: Static coefficient of friction is greater than the kinetic coefficient of friction. a) True b) False
A: A
Q: A capacitor is made of 2 rectangular metal plates with side length of 3cmx6cm separated by a distanc...
A:
Q: body moving with a constant velocity on normal ground initially has an energy of 1000 J. If the fina...
A: B
Q: Light with a wavelength of 580 nm passes through two fans, creating an interference pattern on the s...
A: initially wavelength of light used=580 nm=580×10-9 m Distance of the screen from the source, D=3.2 m...
Q: force of 10 N creates a displacement of 2 m but the work done on the body throughout its motion is e...
A: A
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