On which factors does the escape speed of a body from the surface of Earth depend?

On which factors does the escape speed of a body from the surface of Earth depend?
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On which factors does the escape speed of a body from the surface of Earth depend?
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A body can escape the gravitational pull of the earth if it is thrown up with a velocity of? A. 25 miles per sec b ) 60 miles per sec C. 7 miles per sec (Answer) D. 10 miles per sec E. None of these

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The escape velocity of a body on earth which is independent of its mass is about __________ km/second. (A) 3 (B) 7 (C) 11 (D) 15

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State the factors on which the selection of type of materials depend.

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What are the factors that a rational agent should depend on at any given time?

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The escape velocity from the earth’s surface is about 1. 30 km/sec 2. 6 km/sec 3. 11.2 km/sec 4. 300 km/sec 15. The radiant energy of the sun is due to (a) Nuclear fission (b) Nuclear fusion (c) Sinking of the sun (d) Violent explosions

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Form the hot metal surface electrons escape because

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The distribution of particle speeds in an ideal gas at a given temperature.  a. velocity of propagation  b. escape velocity  c. Maxwell speed Distribution  d. terminal velocity

Description : The distribution of particle speeds in an ideal gas at a given temperature.  a. velocity of propagation  b. escape velocity  c. Maxwell speed Distribution  d. terminal velocity

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Which planet best to escape Earth when our sun gets too hot?

Description : Which planet best to escape Earth when our sun gets too hot?

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A blanket of crystals that covers all. Nothing can escape its fall. It will put you to sleep in a harsh way, and you will never again see the day It's on the earth always and forever, part of our lives leaving, never. Floats and falls like little butterflies. Catch them and they will surely die. What am I? -Riddles

Description : A blanket of crystals that covers all. Nothing can escape its fall. It will put you to sleep in a harsh way, and you will never again see the day It's on the earth always and forever, part ... never. Floats and falls like little butterflies. Catch them and they will surely die. What am I? -Riddles

Last Answer : Snow.

Escape velocity of earth?

Description : Escape velocity of earth?

Last Answer : 11.2km/s

For a missile Launched with A velocity Less than the escape velocity of earth, the total energy is

Description : For a missile Launched with A velocity Less than the escape velocity of earth, the total energy is

Last Answer : Negative

For a missile Launched with A velocity Less than the escape velocity of earth, the total energy is

Description : For a missile Launched with A velocity Less than the escape velocity of earth, the total energy is

Last Answer : Negative

Velocity of escape is equal to A. r × √(2g); where r: radius of Earth or any other planet for that matter, g: gravitational field strength B. g × √(2r); where r: radius of Earth or any other planet for that matter, g: gravitational field strength C. √(2g) ⁄ r; where r: radius of Earth or any other planet for that matter, g: gravitational field strength D. √(2gr); where r: radius of Earth or any other planet for that matter, g: gravitational field strength

Description : Velocity of escape is equal to A. r √(2g); where r: radius of Earth or any other planet for that matter, g: gravitational field strength B. g √(2r); where r: radius of ... (2gr); where r: radius of Earth or any other planet for that matter, g: gravitational field strength

Last Answer : √(2gr); where r: radius of Earth or any other planet for that matter, g: gravitational field strength

The ideal angle of banking provided on roads a.Depends on (velocity)2 of vehicle b.Depends on the nature of road surface c.Depend on coefficient of friction between the road and the vehicle cantact point d.Depends on weight of the vehicle e.All above

Description : The ideal angle of banking provided on roads a.Depends on (velocity)2 of vehicle b.Depends on the nature of road surface c.Depend on coefficient of friction between the road and the vehicle cantact point d.Depends on weight of the vehicle e.All above

Last Answer : a. Depends on (velocity)2 of vehicle

Filtration rate does not depend upon the (A) Pressure drop & area of filtering surface (B) Resistance of the cake & the septum (C) Properties of the cake & the filtrate (D) None of these

Description : Filtration rate does not depend upon the (A) Pressure drop & area of filtering surface (B) Resistance of the cake & the septum (C) Properties of the cake & the filtrate (D) None of these

Last Answer : (D) None of these

Radiation heat transfer rates does not depend upon the (A) Type of absorbing surface (B) Distance between the heat source and the object receiving the heat (C) Surface area and temperature of the heat source (D) None of these

Description : Radiation heat transfer rates does not depend upon the (A) Type of absorbing surface (B) Distance between the heat source and the object receiving the heat (C) Surface area and temperature of the heat source (D) None of these

Last Answer : (D) None of these

The frictional resistance in laminar flow does not depend on the (A) Area of surface in contact (B) Flow velocity (C) Fluid temperature (D) Pressure of flow

Description : The frictional resistance in laminar flow does not depend on the (A) Area of surface in contact (B) Flow velocity (C) Fluid temperature (D) Pressure of flow

Last Answer : (A) Area of surface in contact

Thermal conductivity of a material does not depend upon its (A) Mass (B) Volume (C) Surface area (D) All 'a', 'b' & 'c'

Description : Thermal conductivity of a material does not depend upon its (A) Mass (B) Volume (C) Surface area (D) All 'a', 'b' & 'c'

Last Answer : (D) All 'a', 'b' & 'c'

Evaporation losses depend upon (A) Area of the water surface and depth of the water (B) Nature of precipitation and type of vegetation (C) Humidity and wind velocity (D) All the above

Description : Evaporation losses depend upon (A) Area of the water surface and depth of the water (B) Nature of precipitation and type of vegetation (C) Humidity and wind velocity (D) All the above

Last Answer : Answer: Option D

With an increase in size of tube, the rise or depression of liquid in the tube due to surface tension will (A) Decrease (B) Increase (C) Remain unchanged (D) Depend upon the characteristics of liquid

Description : With an increase in size of tube, the rise or depression of liquid in the tube due to surface tension will (A) Decrease (B) Increase (C) Remain unchanged (D) Depend upon the characteristics of liquid

Last Answer : Answer: Option A

The strength and quality of concrete, depend upon: (A) Grading of aggregates (B) Surface area of aggregates (C) Shape of aggregates (D) All the above

Description : The strength and quality of concrete, depend upon: (A) Grading of aggregates (B) Surface area of aggregates (C) Shape of aggregates (D) All the above

Last Answer : Answer: Option D

What does the speed of an object moving at unequal speed depend on ?

Description : What does the speed of an object moving at unequal speed depend on ?

Last Answer : What does the velocity of an object moving at unequal speed depend on ?

What does the speed of sound depend on ?

Description : What does the speed of sound depend on ?

Last Answer : The speed of sound depends on the density , nature , temperature and humidity of the medium. As the density and temperature increase, the speed of sound increases. For example, with an increase in ... . The velocity of sound through air is lowest and the velocity of sound through zero is zero.

A two stroke engine has a speed of 750 rpm. A four stroke engine having an identical cylinder size runs at 1500 rpm. The theoretical output of the two stroke engine will (a) Be twice that of the four stroke engine (b) Be half that of the four stroke engine (c) Be the same as that of the four stoke (d) Depend upon whether it is a CI or SI engine

Description : A two stroke engine has a speed of 750 rpm. A four stroke engine having an identical cylinder size runs at 1500 rpm. The theoretical output of the two stroke engine will (a) Be twice that of the four stroke ... ) Be the same as that of the four stoke (d) Depend upon whether it is a CI or SI engine

Last Answer : Ans :c

Angle of nip of the crushing rolls does not depend upon the (A) Diameter of the rolls (B) Speed of the rolls (C) Product size (D) Feed size

Description : Angle of nip of the crushing rolls does not depend upon the (A) Diameter of the rolls (B) Speed of the rolls (C) Product size (D) Feed size

Last Answer : (B) Speed of the rolls

Theoretical head developed by a centrifugal pump does not depend upon the __________ the impeller. (A) Radius of (B) Speed of (C) Fluid velocity leaving (D) None of these

Description : Theoretical head developed by a centrifugal pump does not depend upon the __________ the impeller. (A) Radius of (B) Speed of (C) Fluid velocity leaving (D) None of these

Last Answer : (D) None of these

Average density of the Earth (a) Is directly proportional to g (b) Is inversely proportional to g (c) Does not depend on g (d) Is a complex function of g

Description : Average density of the Earth (a) Is directly proportional to g (b) Is inversely proportional to g (c) Does not depend on g (d) Is a complex function of g

Last Answer : Ans:(c)

Light coloured clothes are preferred in summer because (a) light colours are good radiators of heat (b) light colours are poor absorbers of heat (c) they soak sweat faster (d) they allow body heat to escape faster

Description : Light coloured clothes are preferred in summer because (a) light colours are good radiators of heat (b) light colours are poor absorbers of heat (c) they soak sweat faster (d) they allow body heat to escape faster

Last Answer : Ans:(b)

Woollens keep us warm in winter because they (a) produce more warmth (b) are good absorbers of heat (c) do not allow our body heat to escape (d) do not allow cool air to enter

Description : Woollens keep us warm in winter because they (a) produce more warmth (b) are good absorbers of heat (c) do not allow our body heat to escape (d) do not allow cool air to enter

Last Answer : Ans:(c)

Animals have the innate ability to escape from predation. Examples for the same are given below. Select the incorrect example. (a) Colour change in Chamaeleon (b) Enlargement of body size by swallowing air in puffer fish (c) Poison fangs in snakes (d) Melanism in moths

Description : Animals have the innate ability to escape from predation. Examples for the same are given below. Select the incorrect example. (a) Colour change in Chamaeleon (b) Enlargement of body size by swallowing air in puffer fish (c) Poison fangs in snakes (d) Melanism in moths

Last Answer : (c) Poison fangs in snakes

Consider the following four conditions (1 - 4) and select a correct pair of them as adaptations to environment in desert lizards. Conditions: 1. Burrowing in soil to escape high temperature. 2. Losing heat rapidly from the body during high temperature. 3. Bask in sun when temperature is low. 4. Insulating body due to thick fatty dermis. (a) 3, 4 (b) 1, 3 (c) 2, 4 (d) 1, 2

Description : Consider the following four conditions (1 - 4) and select a correct pair of them as adaptations to environment in desert lizards. Conditions: 1. Burrowing in soil to escape high temperature. 2. Losing heat rapidly from the body during ... to thick fatty dermis. (a) 3, 4 (b) 1, 3 (c) 2, 4 (d) 1, 2

Last Answer : (b) 1, 3

Pick out the wrong statement. (A) Biological oxygen demand (B.O.D.) value of a sewerage sample is always lower than its chemical oxygen demand (C.O.D.) value (B) Environmental pollution by NOx emission is much higher by four stroke petrol engines as compared to the two stroke engines (C) Temperature in stratosphere rises with increasing altitude (D) The characteristic of a green house body is that it allows the long wavelength incoming solar radiation to come in but does not allow the short wavelength infra red radiation to escape out of the earth's atmosphere

Description : Pick out the wrong statement. (A) Biological oxygen demand (B.O.D.) value of a sewerage sample is always lower than its chemical oxygen demand (C.O.D.) value (B) Environmental pollution by ... in but does not allow the short wavelength infra red radiation to escape out of the earth's atmosphere

Last Answer : (D) The characteristic of a green house body is that it allows the long wavelength incoming solar radiation to come in but does not allow the short wavelength infra red radiation to escape out of the earth's atmosphere

A 'body' which allows the short wavelength incoming solar radiation to enter in, but does not allow long wave length outgoing infra red radiation to escape out is called the (A) Global warming (B) Green house (C) Atmospheric effect (D) Ionosphere

Description : A 'body' which allows the short wavelength incoming solar radiation to enter in, but does not allow long wave length outgoing infra red radiation to escape out is called the (A) Global warming (B) Green house (C) Atmospheric effect (D) Ionosphere

Last Answer : (B) Green house

Due to which of the following factors the brush wear rate is altered ? (a) Speed of the machine (b) Contact pressure (c) Surface conditions of brush and commutator (d) Excessive sparking (e) All of the above

Description : Due to which of the following factors the brush wear rate is altered ? (a) Speed of the machine (b) Contact pressure (c) Surface conditions of brush and commutator (d) Excessive sparking (e) All of the above

Last Answer : Ans: E