Description : Classify the following units into fundamental, supplementary and derived units: newton, metre, candela
Last Answer : Classify the following units into fundamental, supplementary and derived units: newton, metre, candela, ... , volt, mol, coulomb, farad, steradian.
Description : What's the relationship between fundamental and derived quantities?
Last Answer : According to the (National Institute of Standards and Technology (NIST), "The SI is founded on seven SI base units for seven base quantities assumed to be mutually independent, as given in Table 1.""Other ... is generally omitted. "Refer to the Related Link below in order to see Table 1 and Table 2.
Description : Using force, length and time as fundamental quantities, the dimensions of mass would be a.FL-2T+2 b.FL-1T+2 c.FL-1T+1 d.107 dynes e.FL-2T+1
Last Answer : b. FL-1T+2
Description : If length ‘L’, force ‘F’ and time ‘T’ are taken as fundamental quantities, what would be the dimensional equation of mass and density?
Last Answer : If length ‘L’, force ‘F’ and time ‘T’ are taken as fundamental quantities, what would be the dimensional equation of mass and density?
Description : Which of the following is NOT one of the fundamental quantities in physics? w) time x) length y) weight z) mass
Last Answer : ANSWER: Y -- WEIGHT
Description : Which of the following is not a vector quantity? (1) Acceleration (2) Electric current (3) Force (4) Velocity
Last Answer : (2) Electric current Explanation: For a physical quantity to be termed a vector quantity, having magnitude and direction is not enough.
Description : What are derived quantities and derived units? State two examples. State the corresponding S.L. and C.G.S. units of the examples.
Last Answer : What are derived quantities and derived units? State two examples. State the corresponding S.L. and C.G.S. units of the examples.
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 : What are fundamental units? State the S.l. units of seven fundamental quantities.
Last Answer : What are fundamental units? State the S.l. units of seven fundamental quantities.
Description : What are fundamental quantities? State two examples of fundamental quantities. Write their S.J. and C.G.S. units.
Last Answer : What are fundamental quantities? State two examples of fundamental quantities. Write their S.J. and C.G.S. units.
Description : What are the three fundamental quantities involved in radar displays?
Last Answer : Range, bearing, and elevation.
Description : The fundamental duties in the Indian Constitution are derived from the constitution of which country? -General Knowledge
Last Answer : Hemant Singh Name of Countries Borrowed Features of the Constitution USSR (Now Russia) 1. Fundamental duties 2. The ideals of justice (social, economic and political), expressed in the Preamble. France 1. Concept of “Republic” 2. Ideals of Liberty, Equality and Fraternity(contained in the Preamble)
Last Answer : answer:
Description : What is the difference between a fundamental and derived quantity?
Last Answer : Need answer
Description : Which of the following is not a primary/fundamental, but a derived pharmacokinetic parameter: A. Bioavailability B. Volume of distribution C. Clearance D. Plasma half life
Last Answer : D. Plasma half life
Description : Which of the following is scalar quantity a.Area of triangle b.Displacement of a particle c.Acceleration of car d.Force of friction e.Velocity a gear
Last Answer : a. Area of triangle
Description : Area under velocity-time graph tells us the A. time B. acceleration C. displacement D. velocity
Last Answer : displacement
Description : Correct example of vector quantities could be A. Distance and Speed B. Displacement and Velocity C. Distance and Displacement D. Speed and Velocity
Last Answer : Displacement and Velocity
Description : Which of the following quantities are computed by using the hydraulic radius for non-circular ducts? (A) Velocity and relative roughness (B) Head loss and velocity (C) Reynold number, relative roughness and head loss (D) Reynolds number and friction factor
Last Answer : (C) Reynold number, relative roughness and head loss
Description : In fluid flow, and heat and mass transfer, one encounters (i) kinematic velocity (μ), (ii) molecular diffusivity (θ) and thermal diffusivity (α). The units of these quantities are. (A) μ , α and θ all have units of m/ ... μ has unit of m/s (D) α and θ have units of m/s, while μ has unit of m2/s
Last Answer : Option C
Description : Which of the following quantities has the GREATEST influence on the overall efficiency of a conventional (Rankine cycle) electric generating station burning fossil fuels? w) steam temperature at the steam turbine ... pressure at the steam turbine inlet z) pounds of ash and sulfur per pound of fuel
Last Answer : ANSWER: W -- STEAM TEMPERATURE AT THE STEAM TURBINE INLET
Description : In the equation of a nuclear reaction, all but one of the following quantities are equal to each other on both sides of the equation. Which quantity is NOT conserved: w) the net electric charge x) the total mass-energy y) the number of protons z) the number of nucleons
Last Answer : ANSWER: Y -- THE NUMBER OF PROTONS
Description : Which of the following two quantities when same, makes one pipe system equivalent to another pipe system? (A) Head & discharge (B) Length & discharge (C) Length & diameter (D) Friction factor & diameter
Last Answer : (A) Head & discharge
Description : Two pipe systems can be said to be equivalent, when the following quantities are same (A) Friction loss and flow (B) Length and diameter (C) Flow and length (D) Friction factor and diameter
Last Answer : Answer: Option A
Description : Which one of the following physical quantities is independent of relativistic speed? a) Mass b) Length c) Time d) Charge
Last Answer : d) Charge
Description : Classify the hydro-electric plants according to the head and load basis.
Last Answer : Classification the hydro-electric plants According to availability of Head of Water: 1. Very high head power plant 2. High head power plant 3. Medium head power plant 4. Low head power plant ... -electric plants According to Load basis: 1. Base load power plant 2. Peak load power plant
Description : Classify hydro-electric power plants according to water flow regulation and explain in brief.
Last Answer : Classification of hydro-electric power plants according to water flow regulation of water flow:- 1. Large reservoir power plant 2. Run-off river (ROR) power plant with poundage 3. Run-off River ... depends upon rate of flow of water Initial cost is less Its purpose is to generate electricity.
Description : During planetary motion which of the following remains constant? a.Augular speed b.Linear velocity c.Angular acceleration d.Total angular momentum e.All of the above
Last Answer : b. Linear velocity
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 flywheel 200 cm in diameter is rotating at 100 rpm. A point on the rim of the flywheel will not have a.angular velocity b.centripental acceleration c.tangential acceleration d.all of the above e.107 dynes
Last Answer : c. tangential acceleration
Description : If a particle charges its angular velocity from 30 to 35 rpm in 20 seconds then it has angular acceleration of a.107 dynes b.30 rev/min2 c.10 rev/min2 d.20 rev/min2 e.15 rev/min2
Last Answer : e. 15 rev/min2
Description : In which case power required would be more a.In lifting up a weight of 100 kg at a velocity of 3 m/sec but accelerating upwards at 0.5 m/sec b.In lowering a weight of 100 kg along an a inclined plane ... speed of 3 m/sec e.In lowering the weight at a velocity of 3 m/sec and acceleration of 1 m/sec2
Last Answer : a. In lifting up a weight of 100 kg at a velocity of 3 m/sec but accelerating upwards at 0.5 m/sec
Description : A roller coaster reaches a velocity of 20 m/s at a location where the radius of curvature is 40 m. Calculate the acceleration in m/s2? a.10 b.9 c.11 d.8 e.107 dynes
Last Answer : a. 10
Description : A flywheel 200 cm in diameter is rotating at 100 rpm. A point one the rim of the flywheel will not have a.angular velocity b.centripetal acceleration c.tangential acceleration d.all of the above e.107 dynes
Last Answer : a. angular velocity
Description : The velocity-time graph shows the motion of a cyclist. Find (i) its acceleration (ii) its velocity (iii) the distance covered by the cyclist in 15 seconds Numerical Questions and answers on Motion for Class 9 physics -Science
Last Answer : (i) We can see from the graph that velocity is not changing So,acceleration is equal to zero. (ii) By Reading the graph, velocity = 20 m/s (iii) Distance covered in 15 seconds, s=u×t=20×15=300s=u×t=20×15=300 m
Description : A object moves with uniform positive acceleration. Its velocity-time graph will be (a) A straight line parallel to the time axis (b) A straight line inclined at an obtuse angle to the time axis (c) A straight line inclined at an acute angle to the time axis (d) None of these. -Science
Last Answer : Answer is (c)
Description : The velocity, time graph of two bodies A and B travelling along the +x direction are given in the fi gure.(a) Are the bodies moving with uniform acceleration ? (b) Which body is moving with greater acceleration ? Give reasons. -Biology
Last Answer : The acceleration is given by the slope of velocity-time graph. Slope of body-A > Slope of body-B as it forms a greater angle with time axis than body B. Thus, body A moves with higher acceleration
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 : Data for Velocity, acceleration of car in three dimensions for at least 6 equal time intervals?
Last Answer : Since the time derivative of the velocity function is acceleration, d dt v ( t ) = a (t ), we can take the indefinite integral of both sides, finding ∫ d dt v (t )dt = ∫ a( t )dt + C 1, where C 1 is a constant of integration. ... 0) = v 0, then v 0 = 0 + C1 . Then, C1 = v 0 and v (t ) = v 0 + at ,
Description : Frame the formula: final velocity (v) of a body in linear motion is equal to the sum of its initial velocity (u) and the product of acceleration (a) a
Last Answer : Frame the formula: final velocity (v) of a body in linear motion is equal to the sum of its initial velocity (u) and ... v=u-at C. v=u+at D. v=-u-at
Description : The initial velocity of an object is vector u = 5i + 10j m/s. Its constant acceleration is vector a = 2i + 3j m/s^2.
Last Answer : The initial velocity of an object is vector u = 5i + 10j m/s. Its constant acceleration is ... Determine the velocity and the displacement after 5 s.
Description : Explain the velocity-tune graphs of an object: i) Moving with zero acceleration. ii) Moving with constant positive acceleration.
Last Answer : Explain the velocity-tune graphs of an object: i) Moving with zero acceleration. ii) ... acceleration. iv) Moving with non-uniform acceleration.
Description : If the motion of an object is described by x = f(t) write formulae for instantaneous velocity and acceleration.
Last Answer : If the motion of an object is described by x = f(t) write formulae for instantaneous velocity and acceleration.
Description : Acceleration is the slope of the velocity vs time graphing?
Last Answer : It’s true or false
Description : What is the acceleration if the velocity is constant?
Last Answer : the velocity increases at a constant rate
Description : What is acceleration of a body moving with uniform velocity?
Last Answer : zero because the initial and final velocity is constant . so,difference bet. final velocity and initial velocity is zero
Description : If two bodies, one heavy and one light, are acted upon by the same force for the same time, then both bodies acquire the same (a) velocity (b) momentum (c) acceleration (d) speed
Last Answer : Ans:(b)
Description : When the velocity of a body is doubled, its 1. acceleration is doubled 2. momentum is doubled 3. kinetic energy becomes four times 4. potential energy is doubled Which of the above is/are correct? (a) 2 only (b) 2 and 3 (c) 3 only (d) 2 and 4
Description : A particle is acted upon by a force of constant magnitude which is always perpendicular to the velocity of the particle. The motion of the particle takes place in a plane. It follows that (a) Its ... ) Its acceleration is constant (c) Its kinetic energy is constant (d) It moves in a circular path
Last Answer : Ans:(d)