Description : A bomb at rest explodes into a large number of tiny fragments. The total momentum of all the fragments – (1) is zero (2) depends on the total mass of all the fragments (3) depends on the speeds of various fragments (4) is infinity
Last Answer : (1) is zero Explanation: In an explosion, an internal impulse acts in order to propel the parts of a system (often a single object) into a variety of directions. After the explosion, the individual parts of the system (that is often a collection of fragments from the original object) have momentum.
Description : A bomb at rest explodes into a large number of tiny fragments. The total momentum of all the fragments (1) is zero (2) depends on the total mass of all the fragments (3) depends on the speeds of various fragments (4) is infinity
Last Answer : is zero
Description : A shell, initially at rest suddenly explodes into two equal fragments A and B. Which one of the following is observed? (a) A and B move in the same direction with the same speed (b) A ... move in opposite directions with the same speed (d) A and B move in opposite directions with different speeds
Last Answer : Ans:(c)
Description : If a bomb dropped from an airplane explodes in mid-air _______. (1) its KE increases (2) its total energy increases (3) its total energy decreases (4) its total momentum decreases
Last Answer : (1) its KE increases Explanation: The kinetic energy of an object is the energy that it possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity.
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 : A spring ball of mass 0.5 kg is dropped from some height. On falling freely for 10 s, it explodes into two fragments of mass ratio 1:2.
Last Answer : A spring ball of mass 0.5 kg is dropped from some height. On falling freely for 10 s, ... m/s. Calculate the kinetic energy supplied during explosion.
Description : In an isolated system two cars each with a mass of 1000 kg collide car 1 is initially at rest while car 2was moving at10ms what is the magnitude of their combined momentum after the collision?
Last Answer : What is the answer ?
Description : In an isolated system two cars each with a mass of 1500 kg collide car 1 is initially at rest while car 2 was moving at 5ms. What is their combined momentum after collision?
Last Answer : Need answer
Description : A lighter object A and a heavier object B are initially at rest. Both are imparted the same linear momentum.
Last Answer : A lighter object A and a heavier object B are initially at rest. Both are imparted the same linear ... or B or both will start with the same energy?
Description : If two bodies of different masses, initially at rest, are acted upon by the same force for the same time, then the both bodies acquire the same - (1) velocity (2) momentum (3) acceleration (4) kinetic energy
Last Answer : (2) momentum Explanation: If two bodies of different masses, initially at rest, are acted upon by the same force for the same time, then the both bodies acquire the same momentum.
Description : A box is initially at rest on a horizontal, frictionless table. If a force of 10 Newtons acts on the box for 3 seconds, what is the momentum of the box at the end of the 3 second interval?
Last Answer : ANSWER: 30 NEWTON-SECONDS or 30 KILOGRAM-METER PER SECOND
Description : A bomb explodes on the Moon. How long will it take for the sound to reach the Earth? (a) 10 s (b) 1,000 s (c) 1 day (d) None of these
Last Answer : Ans:(d)
Description : There are 10 bombs on the ground, 1 bomb explodes. How many bombs are there left? -Riddles
Last Answer : None. Because when that 1 bomb exploded, it caused the rest of the Bombs to explode too.
Description : A bomb explodes on the moon. You will hear its sound on earth after ___
Last Answer : ou cannot hear the sound of explosion 514.
Description : A bomb explodes on the moon. You will hear its sound on earth after – (1) 20 minutes (2) 2 hours 20 minutes (3) 3.7 hours (4) You cannot hear the sound of explosion
Last Answer : (4) You cannot hear the sound of explosion Explanation: The sound will never reach Earth because there are not enough molecules or atoms of matter per cubic centimeter of space to create the pressure waves ... Sound propagation needs a medium. The people on the Earth can see the flash, but no sound.
Description : A bomb explodes on the moon. You will hear its sound on earth after ______ (1) 20 minutes (2) 2 hours 20 minutes (3) 3.7 hours (4) You cannot hear the sound of explosion
Last Answer : You cannot hear the sound of explosion
Description : A particle of mass m is moving along a straight path through the origin of coordinates with a velocity v. The angular momentum of the particle about the origin (a) mv (b) Depends on its distance from origin (c) Is zero (d) Changes from positive to negative as it passes through the origin
Description : A force of 100 Newtons acts for 0.5 seconds on a body of mass 20 kg which is initially at rest. The velocity attained by the body is a.20 m/s b.5 m/s c.2.5 m/s d.0.5 m/s e.107 dynes
Last Answer : c. 2.5 m/s
Description : Which of the following physical quantities changes or tends to change the state of rest or of uniform motion of a body in a straight line? (1) Momentum (2) Mass (3) Force (4) Inertia
Last Answer : (3) Force Explanation: Force is an agent which changes or tends to change the state of rest or of uniform motion of a body.
Description : The response of an Undamped system under resonance will be a. very large b. infinity c. zero
Last Answer : b. infinity
Description : The caper: useless little ball of brine or tiny charming flavor bomb?
Last Answer : Boy, do I have a head cold! It took me a while to figure out what kind of caper you were on! I had one recipe for a cold roast beef that had a caper mustard sauce; I thought the capers added some color and flavor. Still probably have some in a jar from 20 years ago.
Description : What is the reflux ratio at total reflux? (A) Zero (B) Infinity (C) Unity
Last Answer : (B) Infinity
Description : Three solid objects of the same material and of equal mass-a sphere, a cylinder (length = diameter) and a cube are at 500°C initially. These are dropped in a quenching bath containing a large volume of cooling oil ... (A) Cube (B) Cylinder (C) Sphere (D) Equal for all the three
Last Answer : (A) Cube
Description : A block of wood initially at rest slides down an inclined plane. Neglecting friction, the kinetic energy of the block at the bottom of the plane is: w) all converted into heat x) equal to its ... kinetic energy at the top of the plane z) dependant on the materials of which the block is made
Last Answer : ANSWER: X -- EQUAL TO ITS POTENTIAL ENERGY (WITH RESPECT TO THE BOTTOM OF PLANE) WHEN IT WAS AT THE TOP OF THE PLANE.
Description : An object in equilibrium always has zero: w) velocity x) momentum y) mass z) acceleration.
Last Answer : ANSWER: Z -- ACCELERATION
Description : If the resultant force acting on a body of constant mass is zero, the body's momentum is: w) increasing x) decreasing y) always zero z) constant
Last Answer : ANSWER: Z -- CONSTANT
Description : A nucleus X, initially at rest , undergoes alpha dacay according to the equation , ` _(92)^(A) X rarr _(Z)^(228)Y + alpha ` (a) Find the value of `A`
Last Answer : A nucleus X, initially at rest , undergoes alpha dacay according to the equation , ` _(92)^(A) X rarr _(Z)^(228)Y + ... u , m (_(1)^(1) H) = 1.008 u `
Description : A car traveling at a constant velocity of 20 meters per second passes a second car which is initially at rest. The car which was at rest starts accelerating at 10 meters per second squared the instant it is passed ... car. They will meet again in: w) 2 seconds x) 4 seconds y) 6 seconds z) 8 seconds
Last Answer : ANSWER: X -- 4 SECONDS
Description : A 10 kilogram body initially moving with a velocity of 10 meters per second makes a head-on collision with a 15 kilogram body initially at rest. The two objects stick together. What is the velocity of the combined system just after the collision?
Last Answer : ANSWER: 4 METERS PER SECOND
Description : Why are download speeds in America so slow compared to the rest of the world?
Last Answer : Removed by Ask-public moderators.
Description : In planetary motion a.The total angular momentum remains constant b.The total linear momentum remains constant c.The total linear momentum is zero d.The total angular momentum is zero e.None of the above
Last Answer : a. The total angular momentum remains constant
Description : Total momentum within a closed system is A. increasing B. decreasing C. zero D. constant
Last Answer : constant
Description : If the total kinetic energy and momentum of a system becomes zero after collision, then the collision is A. elastic B. inelastic C. conserved D. not conserved
Last Answer : inelastic
Description : Which of the following statements dealing with simple harmonic motion of a mass-spring system is TRUE? w) The acceleration is largest when the oscillating mass is instantaneously at rest. x) The ... of the motion. z) The acceleration is larger when the oscillating mass has its greatest velocity.
Last Answer : ANSWER: W -- THE ACCELERATION IS LARGEST WHEN THE OSCILLATING MASS IS INSTANTANEOUSLY AT REST
Description : Am I a science student ? I am a science student. I want to buy a tablet for 4G speeds , the screen will be a little bigger for watching and studying various educational videos on youtube , for taking live ... be better for this ? What to buy ? Which company will I buy and what will be the price ?
Last Answer : answer:
Description : Will I take SSC exam next year ? I am a science student. I want to buy a tablet for 4G speeds , the screen will be a little bigger for watching and studying various educational videos on youtube , for ... be better for this ? What to buy ? Which company will I buy and what will be the price ?
Last Answer : All the models of Symphony are good. But if you say which is the best , I am confused about it. Because everyone speaks one by one. Many of my classmates and I are using different models of Symphony. You can use any one.
Description : When our sun runs out of lifetime and collapses/explodes, will it transform into a Black Hole? -Space
Last Answer : The Sun would need to be about 20 times more massive to end its life as a black hole. Stars that are born this size or larger can explode into a supernova at the end of their lifetimes before ... a black hole, an object with a gravitational pull so strong that nothing, not even light, can escape.
Description : If two different gases have the same volume, temperature, and pressure and behave like ideal gases, they will also be identical in which one of the following ways? w) average molecular velocity x) total mass y) total molecular kinetic energy z) average momentum per molecule
Last Answer : ANSWER: Y -- TOTAL MOLECULAR KINETIC ENERGY
Description : At minimum reflux ratio for a given separation (A) Number of plates is zero (B) Number of plates is infinity (C) Minimum number of the theoretical plates is required (D) Separation is most efficient
Last Answer : (B) Number of plates is infinity
Description : Pick out the wrong statement. (A) The vessel dispersion number (D/UL) for plug flow and mixed flow approaches zero and infinity respectively (B) Space time in a flow reactor is a ... ideal tubular flow reactor, mixing takes place in radial direction and there is no mixing in longitudinal direction
Last Answer : (C) Mixed reactor is always smaller than the plug flow reactor for all positive reaction orders for a particular duty
Description : A moving body on Earth ordinarily comes to rest by itself because of the (a) Law of inertia (b) Forces of friction (c) Conservation of momentum (d) Gravity
Last Answer : Ans:(b)
Description : For the reversible reaction A ⇌ 2B, if the equilibrium constant K is 0.05 mole/litre; starting from initially 2 moles of A and zero moles of B, how many moles will be formed at equilibrium? (A) 0.253 (B) 0.338 (C) 0.152 (D) 0.637
Last Answer : (B) 0.338
Description : The basic algorithm initially attempts to use the _________context. a. Small b. Shortest c. Longest d. Zero
Last Answer : c. Longest
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
Description : Rest mass of the photon is a) Infinite b) Zero c) Very small d) 1.67 10-27 Kg
Last Answer : b) Zero
Description : What is a quickly moving downhill flow of soil and rock fragments containing a large amount of water?
Last Answer : Could be a landslide.
Description : what happens when black mushrooms explodes
Last Answer : That means it is spreading it spores and going to produce more......you might need to get rid of the mushrooms. So can you keep your dogs safe in another area while you treat this area for fungus ... it. The grass will come back. Is there a depression there or is the water pooling right there?
Description : I am a food that explodes. But long before I explode, I am already dead. I can be small, I can be big, and I can be fragrant. My name is literal. What am I? -Riddles
Last Answer : Popcorn!
Description : What is it called when an aging star explodes? -Space
Last Answer : when aging star explodes i think it is called supernovae.