Which device is used to measure pressure? a) Odometer b) Barometer c) Dynamometer d) Hydrometer
Q: The maximum value of gravitational potential energy is zero. a) True b) False
A: A
Q: An object of mass 1kg is subjected to a variable force in x-direction. The force function is F = x2 ...
A: B
Q: Two identical balls of mass “m” are released from rest from a height “h” on two ramps of different i...
A: A
Q: you and your cousin want to burn some dry leaves using your eyeglasses. Your cousin is farsighted an...
A: The focal length of a lens is defined as the point on its optical axis where all parallel rays passi...
Q: circular disc is rotating about a central axis perpendicular to its diameter with a speed of 5rad/s....
A: C
Q: block of mass 10 Kg accelerates from rest to a velocity of 20 m/s in 5s under the influence of an ex...
A: Given, Mass,m=10kg,Initial Velocity,u=0m/sFinal Velocity,v=20m/sTime,t=5sWord Done,W=? From equation...
Q: The centre of mass of the body always lies on the line of symmetry for an object with uniform densit...
A: A
Q: The angular momentum vector of a particle about a point on the rotational axis is parallel to its an...
A: B
Q: The moment of inertia of a solid sphere is 10kgm2. What will be the moment of inertia of a very thin...
A: A
Q: Consider a system on which there are external forces acting. If the vector sum of all these external...
A: B
Q: What is the coefficient of restitution (e)? a) Ratio of final to initial relative velocities b) Rati...
A: coefficient of restitution e=velocity of separationvelocity of approach=final relative velocityiniti...
Q: What would be the magnitude of the acceleration due to gravity on the surface of the earth if the de...
A: The correct option is D, i. e, 29.42 m/s2 we know that, g = G Mearth / r2 New density is 3 times th...
Q: 3. For ideal gas treated in quantum regime and when the particles are treated as distinguishable but...
A: (a) We consider an ideal gas consists of N molecules. Gas molecules are distinguishable. We know t...
Q: wire has a young’s modulus of 105N/m2, length 1m & radius 3mm. Assuming a uniform cross sectiona...
A: A
Q: A body is falling freely from rest from a height of 100m. The ratio of kinetic energy after 2 and 5 ...
A: B
Q: The work done by a body while covering a vertical height of 5m is 50 kJ. By how much amount has the ...
A: A
Q: 10N force is uniformly distributed over the surface of a sphere of radius 20cm. The force at each po...
A: C
Q: How many penguins with a mass of 30 kg can a disc-shaped ice float with dimensions of (d = 15 m, h =...
A: Given: The mass of one penguin is m=30 kg. The diameter of disc is d=15 m. The height of disc is h=...
Q: force of 40 N acts on body of mass 5 Kg. What is the amount of work done if the total displacement i...
A: A
Q: For a satellite with an elliptical orbit and not a circular orbit, the potential energy varies with ...
A: A
Q: The dimensions of energy are _____ a) [ML2T-2] b) [MLT-2] c) [ML2T-1] d) [MLT-1]
A: A
Q: The law of conservation of energy is not applicable to mechanical systems as they require energy inp...
A: B
Q: Energy is ________ a) Work b) The ability to create work c) Quantification of work d) Force multipli...
A: Energy is defined as the ability to create work. When a force is applied on a body to create displac...
Q: body is under an angular deceleration of 5rad/s2. Its initial speed is 3rad/s. How much angular dist...
A: B
Q: H.W.: prove that the following examples are satisfy Laplace equation 1- f(x, y) =(e-2y)Cos2x 2- f(x,...
A: If a function f(x,y,z) satisfy Laplace equation then ∂2f∂x2+∂2f∂y2+∂2f∂z2=0 ⋯(1) So fir...
Q: a) in ten days the radioactivity of cerium-141 is reduced by 19.3%. what is the half time?(- In2)/In...
A: What is the half life of cerium-141?given,Radioactivity decreases by 19.3%time(t)=10 days=8.64×105 s
Q: The value of the gravitational potential at the centre of a ring of radius “a” and mass “M” is _____...
A: B
Q: material have a stress strain curve which can look similar to the equation y = x2 (for all x>0). ...
A: A
Q: An object is projected vertically upwards with a velocity (gr) 1/2. What is the maximum height reach...
A: B
Q: Assume that the earth is a perfect sphere but of non-uniform interior density. Then, acceleration du...
A: D
Q: Which of the following is the mathematical representation of law of conservation of total linear mom...
A: A
Q: _____ is known as the motion that would take place under the applied force if friction were absent. ...
A: a
Q: A spring of length 1m has two cars connected to both of its ends. The two cars move towards eachothe...
A: C
Q: The PSLV rockets of India launch satellites into the high-earth orbit. a) True b) False
A: B
Q: Q1) Assume that there are two spheres with diameters of 2 cm and 3.2 cm carry a uniform surface char...
A: The situation with inner sphere of diameter d1=0.02m (r1=0.01) having surface charge σ1=4x10-3C/m2 a...
Q: For an object on the surface of the earth, the magnitude of the acceleration due to the gravity of t...
A: B
Q: The velocity of a planet is constant throughout its elliptical trajectory in an orbit. a) True b)Fal...
A: B
Q: For an object experiencing weightlessness _____ a) its weight force is non-zero b) it has inertia c)...
A: B
Q: The total energy of a system moving under the action of a conservative force changes by 50 J. Which ...
A: a
Q: wp1-
A:
Q: Pascal’s Law is valid only for _____ a) water b) metals c) fluids d) gases
A: C
Q: radioactive particle at rest, having mass 10g, breaks into 2 fragments (1&2) in the mass ratio 2...
A: c
Q: M Q.n.3 A central force is defined to be a force that points radially, and whose magnitude depends ...
A: In given problem F(r) = F(r)*r ∇=r*d( )/dr +φ*(1/r)*d( )/dφ +z*d( )/dz ∇xF(r) =rϕzd()/dr(1/r)*d()/dϕ...
Q: The velocities of three particles of masses 10 kg, 20 kg and 30 kg are 10i, 10j and 10k m/s, respect...
A: A
Q: Work done by a force on a body is an example of ______ a) Mechanical work b) Electrical work c) Magn...
A: A
Q: Gravitational potential energy can be zero but gravitational potential can never be zero. a) True b)...
A: B
Q: machine has a power of 20kW. How long will it take for it to lift a body of mass 10kg from the groun...
A: Given data: The power is P=20 kW. The mass of the body is m=10 kg. The height is h=100 m. The acce...
Q: 4-
A: Given, f0=600 Hzfs=400 Hzv=340 m/s
Q: For what value of e is a collision perfectly elastic? a) 1 b) 2 c) 0.5 d) 0
A: A
Q: A capacitor of 3.23µF has an area of 6.35mm^2. Determine the separation distance between the two pla...
A: Given: The capacitance of the capacitor c = 3.23 µF. The area of the plates A = 6.35 mm2. The new c...
Which device is used to measure pressure?
a) Odometer
b) Barometer
c) Dynamometer
d) Hydrometer
Step by step
Solved in 2 steps
