Description : The pressure exerted by a stationary liquid kept in a container at any point inside the liquid is known as ________ pressure. a)atmospheric b)hydrostatic c) air d)none
Last Answer : b)hydrostatic
Description : The spoon dropped by an astronaut in a satellite will – (1) Fall to the floor (2) Remain stationary (3) Continue to follow the motion of the satellite (4) Move tangentially away
Last Answer : (3) Continue to follow the motion of the satellite Explanation: An orbiting satellite is a projectile in the sense that the only force acting upon an orbiting satellite is the force of gravity. A ... (such as a satellite) would continue in motion with the same speed and in the same direction.
Description : Bernoulli's principle shows that, at points in a moving fluid where the potential energy change is very small A. the pressure is low where the velocity is low and similarly, the pressure is ... of the moving fluid D. pressure remain independent of the speed of the stationary fluid
Last Answer : the pressure is low where the velocity is high and conversely, the pressure is high where the velocity is low
Description : Two hockey pucks, of unequal mass and connected by a spring of negligible mass, rest on a horizontal frictionless surface. The spring is released, and the pucks move apart. The center of mass of ... the direction of the greater mass y) remain stationary z) move in the direction of the smaller mass
Last Answer : ANSWER: Y -- REMAIN STATIONARY
Description : The spoon dropped by an astronaut in a satellite will (1) fall to the floor (2) remain stationary (3) continue to follow the motion of the satellite (4) move tangentially away
Last Answer : continue to follow the motion of the satellite
Description : Explain why motion is created in a stationary object even though action and reaction are equal .
Last Answer : According to Newton's third law, the force of action and reaction are equal and opposite. Their gain would be nil if they acted on the same object. But in fact the force of action and reaction ... object, then there is a change of speed and acceleration. The result is motion in a stationary object.
Description : An object at rest will remain at rest and an object in motion will remain in motion until and unless it is acted upon by an external force. This is Newton's – (1) First law (2) Second law (3) Third law (4) Fourth law
Last Answer : (1) First law Explanation: Newton's first law of motion - sometimes referred to as the law of inertia-states that every object will remain at rest or in uniform motion in a straight line unless ... its state by the action of an external force. This is normally taken as the definition of inertia.
Description : (5) A 6500-kg helicopter accelerates upward at 0.60 m/s² while lifting a 1200-kg car. (a) What is the lift force exerted by the air on the rotors? (b) What is the tension in the cable (ignore its mass) that connects the car to the helicopter?
Last Answer : I'll give you some hints: The mass of the helicopter is irrelevant to the solution. All you needs is the mass of the load (the car) and the acceleration to solve the problem. Remember that the ... it. Tension is directly related to force. Now go find the equations in the text, plug and crank.
Description : : Force exerted on a person by atmosphere is A. 200 000 N B. 300 000 N C. 400 000 N D. 500 000 N
Last Answer : 200 000 N
Description : Normal force exerted per unit area by gas on walls of container is A. temperature B. energy C. pressure D. friction
Last Answer : pressure
Description : Electrical force exerted by two point charges on each other is inversely proportional to A. sum of their charges B. product of their charges C. distance between them D. square of distance between them
Last Answer : square of distance between them
Description : A rectangle-shaped open-to-sky tank of water has a length of 2 m and a width of 1 m. If the atmospheric pressure is assumed to be 100 kPa and thickness of the tank walls is assumed to be negligible, the force exerted by ... of water is A. 20 kN B. 50 kN C. 100 kN D. 200 kN
Last Answer : 200 kN
Description : weight of water, the hydraulic mean depth of the sewer and the bed slope w is the unit of the sewer, then the tractive force exerted by flowing water, is A. w r S S B. w r1/2 C. w r S D. w r2/3
Last Answer : ANS: A
Description : Speed of stationary waves is A. 1 m s-1 B. 2 m s-1 C. 3 m s-1 D. zero
Last Answer : zero
Description : A firecracker is placed in the middle of a cluster of stationary billiard balls. The firecracker-billiard ball system sits on a frictionless surface. As the firecracker explodes, the balls scatter. What is the momentum ... to the combined speed of the balls y) equal to the mass of the balls z) zero
Last Answer : ANSWER: Z -- ZERO
Description : Object is in equilibrium if resultant force acting on it is A. increasing B. decreasing C. zero D. becomes constant
Description : For a point charge to feel a net force in a homogeneous magnetic field, which one of the following statements is true? The charge must: w) move parallel to the magnetic lines of flux x) have a component of its motion perpendicular to the lines of flux y) be stationary z) be a positive charge
Last Answer : ANSWER: X -- HAVE A COMPONENT OF ITS MOTION PERPENDICULAR TO THE LINES OF FLUX
Description : What law describes the force between two stationary electrically charged objects? w) Ampere's law x) Coulomb's law y) Kirchoff's Rules (pron: kir-koff rules) z) Ohm's law
Last Answer : ANSWER: X -- COULOMB'S LAW
Description : Zero inductive effect is exerted by:
Last Answer : Zero inductive effect is exerted by: A. `C_(6)H_(5)-` B. H C. `CH_(3)-` D. Cl
Description : In levelling operation (A) When the instrument is being shifted, the staff must not be moved (B) When the staff is being carried forward, the instrument must remain stationary (C) Both (a) and (b) (D) Neither (a) nor (b)
Last Answer : (C) Both (a) and (b)
Description : What would you expect in a graph showing the stiffness of a spring over the force exerted onto it?
Last Answer : My thoughts, and I'm just assuming, are that the graph would have two axes. One (probably the x-axis) would be the force exerted on the spring, measured in some unit. The other ( ... the force exerted on the spring increases, I think that the stiffness of the spring would change accordingly.
Description : A jet of water of cross-sectional area 20 sq. cm impinges on a plate at an angle of 60? with a velocity of 10 m/sec. Neglecting the friction between the jet and plate (density of water 1000/9.81 kgm-1 sec2 per cubic meter), the ... a.15 - 20 kg b.20 - 25 kg c.5 - 10 kg d.25 - 30 kg e.10 - 15 kg
Last Answer : a. 15 - 20 kg
Description : A cannon of barrel length 2 m fires a shell of weight 6 kg with a muzzle velocity of 50 m/sec. The force exerted by the gases on the shell would be approximately a.76 t b.19 t c.152 t d.8.5 t e.38 t
Last Answer : e. 38 t
Description : How does the size of the force exerted earths gravity on a car compare with size of the force the car exerts on earth?
Last Answer : The magnitude of the force is exactly the same (Newton's ThirdLaw).
Description : What is a upward force exerted on objects in a fluid?
Last Answer : The upward force exerted on an object in a fluid isbuoyancy.
Description : What force exerted by blood against the walls of blood vessels?
Last Answer : What is the answer ?
Description : What Each little bit of matter exerted the force of?
Last Answer : Gravity.
Description : If the distance between the earth and the sun were twice what it is now, the gravitational force exerted on the earth by the sun would be (a) twice as large as it is now (b) four times as large as it is now (c) half of what it is now (d) one-fourth of what it is now
Last Answer : Ans:(d)
Description : A hydrogen filled balloon rises in air because (a) The atmospheric pressure decreases with altitude (b) The acceleration due to gravity decreases with altitude (c) The density of air decreases with ... The buoyant force exerted by the air on the balloon is greater than the weight of the balloon
Description : Water is flowing at 1 m/sec through a pipe (of 10 cm I.D) with a right angle bend. The force in Newtons exerted on the bend by water is (A) 10 √2π (B) 5π/2 (C) 5 √2π (D) 5π/√2
Last Answer : (B) 5π/2
Description : The rate of change of moment of momentum represents the __________ by the fluid. (A) Torque applied (B) Force exerted (C) Work done (D) Power developed
Last Answer : (A) Torque applied
Description : Drag is defined as the force exerted by the (A) Fluid on the solid in a direction opposite to flow (B) Fluid on the solid in the direction of flow (C) Solid on the fluid (D) None of these
Last Answer : (B) Fluid on the solid in the direction of flow
Description : The weight of a body is due to (A) Centripetal force of earth (B) Gravitational pull exerted by the earth (C) Forces experienced by body in atmosphere (D) Gravitational force of attraction towards the centre of the earth
Last Answer : (D) Gravitational force of attraction towards the centre of the earth
Description : Rain drops falling through atmospheric air attain limited terminal velocity, because of (A) Upward thrust due to air (B) Viscous force exerted by air (C) Surface tension effects of water (D) Force of gravity
Last Answer : Option B
Description : The force exerted by a moving fluid on an immersed body is directly proportional to the rate of change of momentum due to the presence of the body. This statement is called (A) Newton's law of motion (B) Newton's law of cooling (C) Newton's law of viscosity (D) Newton's law of resistance
Last Answer : Answer: Option D
Description : Total force exerted upon the implement by a power unit called a)pull. B) draft C)side draft. D)unit draft
Last Answer : a)pull
Description : With increase of temperature, the frictional force acting between two surfaces (a) Increase (b) Remain the same (c) Decreases (d) becomes zero
Last Answer : Ans:(b)
Description : An object located four focal lengths in front of a thin, converging lens is moved to within two focal lengths of the lens. As a result, does the size of the image produced by the lens increase, decrease or remain the same?
Last Answer : ANSWER: INCREASE
Description : When the greatest pressure exerted on the ground by a man?
Last Answer : – When he stands on the toes of one foot
Description : The wall of a dam is made thicker at the bottom than at the top because the pressure exerted by the water on the wall (1) depends on the thickness of the wall (2) increases with height of the wall (3) increases with depth of the wall (4) depends on the area of the wall
Last Answer : increases with depth of the wall
Description : If a trolley collides with a stationary trolley of double mass, then they move off with A. half of the original velocity B. one third of original velocity C. double the original velocity D. triple the original velocity
Last Answer : one third of original velocity
Description : The time period of a pendulum when taken to the Moon would: (1) remain the same (2) decrease (3) become zero (4) increase
Last Answer : (4) increase Explanation: Since the pendulum rate will increase with an increase in gravity, and local gravity varies with latitude and elevation on Earth, pendulum clocks must be readjusted to keep time ... example, a pendulum clock moved from sea level to 4000 feet will lose 16 seconds per day.
Last Answer : increase
Description : What is the nature of velocity versus time in the case of an object moving at a steady acceleration from a stationary position ?
Last Answer : In the case of an object moving at a steady acceleration from a stationary position, the velocity versus the time line will be a straight line to the point.
Description : When an object is released into a stationary liquid, how many forces act on the object at the same time ?
Last Answer : When an object is released into a stationary liquid, a 2T force is applied to the object at the same time.
Description : Which one of the following statements is not correct ? (a) A surveyor's compass has two sight vanes (b) A prismatic compass has an object vane and an eye vane (c) A trough compass ... table (d) In a prismatic compass the graduations on the aluminimum disc rotate and the index remains stationary
Last Answer : (a) A surveyor’s compass has two sight vanes
Description : A ball A of mass 0.25 kg moving on a smooth horizontal table with a velocity of 10 m/s strikes an identical stationary ball B on the table. If the impact is perfectly elastic, the velocity of the ball B just after the impact will be a.2.5 m/s b.zero c.5 m/s d.10 m/s e.107 dynes
Last Answer : c. 5 m/s
Description : Under which circumstances will have zero velocity and be still accelerating? a.The bob of a simple pendulum when at its mean position b.107 dynes c.A steamer while taking a turn d.A ball at its highest point of its rise when thrown up e.Tyres of a stationary automobile
Last Answer : d. A ball at its highest point of its rise when thrown up
Description : A ball of mass 1 kg moving with a velocity of 2 m/sec collides directly with a stationary ball of mass 2 kg. If the first ball comes to rest after the impact the velocity of second ball after impact will be a.1.5 m/sec b.0.5 m/sec c.Zero d.2 m/sec e.1.0 m/sec
Last Answer : e. 1.0 m/sec