Description : When A baseball is hit straight up at an initial velocity of 100 ms how long will it take to hit the ground?
Last Answer : The Baseball will travel upwards until its velocity is zero andthen fall back down again.The acceleration of the baseball is the constant accelerationdue to gravity acting in a downwards direction.The time taken to fall back down will be the ... 2 t_top = 2 100/g s = 200/g s ≈ 200/9.81 s ≈20.4 s
Description : A block A is dropped down a smooth inclined plane, while another identical block B is released for free fall from the same height a.block A will have higher velocity than block B while hitting the ... . c.both will hit the ground simultaneously d.block A will hit the ground earlier e.107 dynes
Last Answer : b. block B will hit the ground earlier.
Description : If Chris Bromham took off on his Yamaha and jumped a horizontal distance of 74.0 m across a row of cars and assuming that he started and landed at the same level and was airborne for 1.3 s, what was his initial (angled) velocity as he left the ground?
Last Answer : I really need help. If someone can explain this to me, it'll be great!
Description : Statistics , Problems with Two Projectors ? From the top of a 100 meter high tower an object is thrown at a 30 ° angle with a horizontal speed of 50 ms . At the same time another object from ... সাথে with the same velocity horizontally . At what time and at what height will the two objects meet ?
Last Answer : answer:
Description : What is the frequency of a wave with a velocity of 100 ms and a wavelength of 20m?
Last Answer : Feel Free to Answer
Description : If a 99.79 kg man jumps from the top of a 176.8 meter tall building how long does it take for his body to decelerate to 0 ms once first contact with the ground is made?
Last Answer : It depends upon how much the ground deforms once the first bit of his body hits the ground, and how much his body deforms once the first bit of his body has hit the ground. The former is likely to be ... his body). It will be any time greater than 0 seconds, the the amount of time depends as above.
Description : A stone of wight 100 kg is thrown vertically upwards by a man of height y = 1.8 m with an initial velocity of 20 m/sec. The maximum height to which it will rise would be a.22.2 m b.26 m c.15.1 m d.20.2 m e.10 m
Last Answer : a. 22.2 m
Description : What is the momentum of a 1.35 kg baseball moving at 3.75 ms away from home plate after a hit?
Last Answer : What is the answer ?
Description : What is the speed of an object that is dropped off a cliff after 5 seconds and no air resistance with an initial speed of 0 ms?
Description : Which of the following statements are true of the multiple organ dysfunction syndrome (MODS)? A. The two-hit model proposes that secondary MODS may be produced when even a relatively ... intensive care units has decreased owing to increased awareness, prevention, and treatment of the syndrome.
Last Answer : Answer: ABC DISCUSSION: MODS is part of a clinical continuum that begins with the systemic inflammatory response syndrome, which is the host's stress response to any major insult such ... pathogenesis of MODS, the incidence of MODS continues to increase without a significant improvement in outcome
Description : If you were falling off a cliff on a horse and right before the horse hit the ground you jumped on the horses back. Would you take damage like you fell from the cliff or only the 5 feet or whatever that you jumped up in the air from the horse?
Last Answer : You would still get hurt, but you'd be less hurt than if you landed directly on the ground.
Description : A ball is thrown upward with such a velocity v that it returns to the thrower after 3 s. Take g = 10 `ms^(-2)`. Find the value of v :-
Last Answer : A ball is thrown upward with such a velocity v that it returns to the thrower after 3 s. Take g = 10 `ms^(-2)`. ... /s B. 20 m/s C. 10 m/s D. 5 m/s
Description : An object moves along a straight line with an acceleration of 2 m/s2. If its initial speed is 10 m/s, what will be its speed 2 s later? -Science
Last Answer : u=10 m/s,t=2 s, a=2 m/s2 v=u+atv=u+at v=10+2×2=14v=10+2×2=14 m/s
Description : When a graph is plotted between log x/m and log p, it is straight line with an angle `45^(@)` and intercept 0.3010 on y - axis. If initial pressure is
Last Answer : When a graph is plotted between log x/m and log p, it is straight line with an angle `45 ... adsorbent : (Report your answer after multiplying by 10)
Description : For a zero order chemical reaction, the (A) Half life period is directly proportion to the initial concentration of the reactants (B) Plot of products concentration with time is a straight line through the origin (C) Products concentration increases linearly with time (D) All (A), (B) and (C)
Last Answer : (D) All (A), (B) and (C)
Description : A machine has an initial value of Rs. 5000, service life of 5 years and final salvage value of Rs. 1000. The annual depreciation cost by straight line method is Rs. (A) 300 (B) 600 (C) 800 (D) 1000
Last Answer : (C) 800
Description : During a straight departure, the initial track is to be: a. Within 5° of runway centre-line b. Within 10 of runway centre-line c. Within 15° of runway centre-line d. Within 25° of runway centre-line
Last Answer : c. Within 15° of runway centre-line
Description : A transaction in which the organisation is making an initial purchase of an item to be used to perform a new job is called a A)straight rebuy purchase. B)reciprocal purchase. C)delayed purchase. D)new-task purchase. E)modified rebuy purchase.
Last Answer : D)new-task purchase.
Description : A ball is thrown upwards with an initial velocity of 5 meters per second. How many seconds will it take to reach maximum height? w) 0.5 seconds x) 1 second y) 1.5 seconds z) 2 seconds
Last Answer : ANSWER: W -- 0.5 SECONDS
Description : The total propagation delay time from transmission to reception of signals from a ground transmitter to ground receiver with angle of elevation at 10 degrees respectively is A. 273 ms B. 239 ms C. 275 ms D. 260 ms
Last Answer : A. 273 ms
Description : A ground station is operating to a geostationary satellite at a 5° angle of elevation. Calculate the round-trip time between ground station and satellite. A. 275 s B. 275 ms C. 137.5 s D. 137.5 ms
Last Answer : B. 275 ms
Description : An old parchment describes the location of buried treasure: 'On the island there are only two trees, A and B, and the remains of a gallows. Start at the gallows and count the steps required to walk ... when he gets to the island finds the gallows missing. Is there any way he can still get -Riddles
Last Answer : A simple experiment with a ruler and paper shows that any position for the gallows leads to the same point.
Description : The velocity of light in glass is `2 xx 10^(8)ms^(-1)` while that in vaccum is `3 xx 10^(8)ms^(-1)`. By how much would an ink dot appeat to be raised
Last Answer : The velocity of light in glass is `2 xx 10^(8)ms^(-1)` while that in vaccum is `3 xx 10^ ... raised when covered by a glass plate of 4.5 cm thickness.
Description : A charged particle with a velocity `2xx10^(3) ms^(-1)` passes undeflected through electric field and magnetic fields in mutually perpendicular directi
Last Answer : A charged particle with a velocity `2xx10^(3) ms^(-1)` passes undeflected through electric field and magnetic fields ... 1)` D. `1.33xx10^(3)NC^(-1)`
Description : A beam of protons with a velocity of `4 X 10 ^5 ms^(-1)` enters a uniform magnetic field of 0.3 T. The velocity makes an angle of `60^@` with the magn
Last Answer : A beam of protons with a velocity of `4 X 10 ^5 ms^(-1)` enters a uniform magnetic field of 0.3 T. The ... ` B. `0.012m` C. `0.024m` D. `0.048m`
Description : What is the momentum of 4 kg ball that is moving at the velocity of 2 ms?
Last Answer : (4 kg)*(2 m/s) = 8 kg•m/s
Description : The velocity of light in vacuum is : (1) 3 * 108 ms-1 (2) 2 * 108 ms-1 (3) 3 * 107 ms-1 (4) 3 * 106 ms-1
Last Answer : (1) 3 * 108 ms-1 Explanation: The speed of light in a vacuum is 186,282 miles per second that corresponds to about 3 * 108 ms-1.
Description : A squid axon is placed on stimulating electrodes, and an intracellular electrode is inserted and connected through a cathode-ray oscilloscope (CRO) to an indifferent electrode. When the axon is stimulated, the latent ... . 40 m/s d. 67.5 m/s e. This cannot be determined from the information given
Last Answer : 30 m/s
Description : An electron moves with a velocity of 2 × 106 ms-1 in the direction of a uniform magnetic field of 0.8 Tesla. The force on electron is a) 8 N b) 2 N c) 4 N d) Zero
Last Answer : d) Zero
Description : A ball is dropped from the top of a building 122.5 m high. How long will it take to reach the ground? What wilt be its velocity
Last Answer : A ball is dropped from the top of a building 122.5 m high. How long will it take to reach ... ? What wilt be its velocity when it strikes the ground?
Description : If you were in an elevator and it was falling from a high distance and if it was possible to time your jump right before it hit the ground, would that prevent you from injury?
Last Answer : I really don't know. I'm guessing that if the elevator was falling at a high speed, which it most likely would, jumping might almost be impossible. I could be totally wrong, but even if it wasn't a ... , (which you'd have to know 100%) I'm not sure how much that would really minimize the injury.
Description : A rogue pilot was about to bomb Germany! The commad was given, the hatch was opened and the bomb was released.Why didn't it ever hit the ground? -Riddles
Last Answer : The plane was flying upside down!
Description : If you dropped a cannonball and a tennis ball would the cannon ball hit the ground first or not?
Last Answer : in a vacuum they would hit at the same time; in air the airresistance will slow down the tennis ball so the cannonball wouldhit first
Description : What did Ben Franklin invent to help lighting hit the ground safely?
Description : A man standing on a edge of a cliff throws a stone vertically upwards with a certain speed. He then throws another stone downwards with the same speed. Find the ratio of the speeds of the two stones when they hit the ground ... : 1 (2) 1 : 2 (3) 1 : 4 (4) Cannot be found from the given information.
Last Answer : (1) 1 : 1 Explanation: The stone which is throws upward will have the same velocity of u at the point of its original position when it is falling down. Another stone is thrown downwards with u. So ... will hit the ground with same velocity. So the ratio between the speeds of two stones will be 1:1
Last Answer : 1 : 1
Description : A particle moves along a rough plane inclined at 30? to the horizontal. The co-efficient of friction between the particle and the plane is 0.1. Its initial velocity is 15 m/sec. The ratio of the velocity of the particle when it move ... be in the regions a.8 ? 10 b.5 ? 7 c.2 ? 3 d.4 ? 6 e.10 ? 13
Last Answer : b. 5 ? 7
Description : wandering jew plant as ground cover. Initial spacing ?
Last Answer : 6 to 9 inches.
Description : The run off a drainage basin is (A) Initial recharge + ground water accretion + precipitation (B) Precipitation + ground water accretion + initial recharge (C) Precipitation - ground water accretion + initial recharge (D) Precipitation - ground water accretion - initial recharge
Last Answer : Answer: Option D
Description : When reporting a frequency the use of the word “DECIMAL” can be omitted: a. When there is no likelihood of confusion b. After the initial call c. Never d. By the ground station only
Last Answer : c. Never
Description : The angular acceleration of a flywheel decreases uniformly from 8 rad/sec2 to 2 rad sec2 in 6 sec at which time its angular velocity is 42 rad/sec. The initial angular velocity was a.12 rad/sec b.24 rad/sec c.30 rad/sec d.3 rad/sec e.6 rad/sec
Last Answer : a. 12 rad/sec
Description : A block of weight 20 kg slides with an initial velocity of 2 m sec down an inclined plane on to a spring of stiffness 10 kg/cm. If the co--efficient of friction is 0.2, angle ? = 30 the ratio of ... be a.More than one b.One c.Less than one d.Depends on the stiffness of spring e.None of the above
Last Answer : a. More than one
Description : A stone is dropped into a deep shaft without any initial velocity. The sound of the stone hitting the bottom is heard after 4 seconds. If the velocity of sound is 330 m/sec the depth of the shaft will be a.33.1 m b.660 m c.165 m d.66.2 m e.330 m
Last Answer : d. 66.2 m
Description : Plastic collosion of two bodies of equal mass results in a common velocity after impact which is a.Sum of their initial velocities b.Difference of their initial velocities c.Average of their initial velocities d.Independent of their initial velocities e.None of the above
Last Answer : e. None of the above
Description : Stopping distance of vehicles : When brakes are applied to a moving vehicle, the distance it travels before stopping is called stopping distance. It is an important factor for road safety and depends on ... the brake with the deceleration of 5m/s2. Find the stopping distance of the car -Science
Last Answer : Here u=72 km/hr = 72×10003600m/s=2072×10003600m/s=20 m/s , v=0 a= -5 m/s2 Now using the relation v2=u2+2asv2=u2+2as 0=(20)2+2×(−5)×s0=(20)2+2×(−5)×s s=40ms=40m
Description : An electron moving with a velocity of 5 10 3 m / s enters into a uniform electric field and acquires a uniform acceleration of 10 3 m / s 2 in the direction of initial velocity. i. ... which electron velocity will be doubled.? ii. How much distance electron would cover in this time.? -Science
Last Answer : Given u=5×103m/su=5×103m/s , a=103m/s2a=103m/s2, v=2u=104v=2u=104 m/s i.Using v=u+atv=u+at 104=5×103+103t104=5×103+103t or t=5 sec ii. Using s=ut+12at2s=ut+12at2 s=5×103×5+12×103×52s=5×103×5+12×103×52 =37.5×103m=37.5×103m
Description : A car is accelerated on a levelled road and attains a velocity 4 times of its initial velocity. In this process the kinetic energy of the car -Physics 9th
Last Answer : The kinetic energy becomes 16 time that of initial kinetic energy Final speed = 4 times of initial speed The kinetic energy of car Where, m = mass of car v = initial velocity of car ... of initial velocity, then kinetic energy Hence, The kinetic energy becomes 16 time that of initial kinetic energy
Description : Why is the initial velocity zero in the case of a falling object ?
Last Answer : Because the falling object starts falling from a fixed position. So its forward velocity is taken to be zero.