A man pulls a crate of mass 25 kg across the leveled ground with a horizontal force of 60 N. A constant force of friction of 20 N acts on the sledge. What is the acceleration of the sledge...?
(A) 0.63 ms^-2
(B) 1.6 ms^-2
(C) 2.4 ms^-2
(D) 3.2 ms^-2
1.6 ms^-2
Comments
A man pulls a crate of mass 25 kg across the leveled ground with a horizontal force of 60 N. A constant force of friction of 20 N acts on the sledge. What is the acceleration of the sledge...?
Which mineral is the present in liver, dark green vegetable, red meat, flour, egg yolk, dried fruit, nuts, dried beans, peas, raisins, poultry, fish etc...?
(A) Iron
(B) Copper
(C) Magnesium
(D) Sodium
Iron
Comments
Which mineral is the present in liver, dark green vegetable, red meat, flour, egg yolk, dried fruit, nuts, dried beans, peas, raisins, poultry, fish etc...?
When in the part of its orbit closest to the Sun, Pluto has an atmosphere of nitrogen and methane similar to Triton’s, but what happens when it is farther from the Sun ...?
(A) These gases are not present
(B) These gases are like plasma
(C) These gases are frozen
(D) These gases are volatile
These gases are frozen
Comments
When in the part of its orbit closest to the Sun, Pluto has an atmosphere of nitrogen and methane similar to Triton’s, but what happens when it is farther from the Sun ...?
Which scientist established that the various form of energy mechanical, electrical and heat are basically the same and can be changed from one form into another...?
(A) John Dalton
(B) William Thomson
(C) Albert Einstein
(D) James Prescott Joule
James Prescott Joule
Comments
Which scientist established that the various form of energy mechanical, electrical and heat are basically the same and can be changed from one form into another...?
In a liquid, some energetic molecules break free from the surface even when the liquid is too cold for bubbles to form. What is the name of this process...?
(A) Boiling
(B) Condensation
(C) Convection
(D) Evaporation
Evaporation
Comments
In a liquid, some energetic molecules break free from the surface even when the liquid is too cold for bubbles to form. What is the name of this process...?
When Earth is between the Moon and the Sun, this forms a shadow of the Earth, and the Moon passes through this shadow of the Earth, causing a ______...?
(A) Solar Eclipse
(B) Lunar Eclipse
(C) Moon Shadow
(D) Earth Shadow
Lunar Eclipse
Comments
When Earth is between the Moon and the Sun, this forms a shadow of the Earth, and the Moon passes through this shadow of the Earth, causing a ______...?
The radioactive isotopes are formed by neutrons bombardment on the nucleus, these incident neutrons must have ___ to penetrate in the nucleus....?
(A) Very high velocity
(B) Very low velocity
(C) Intermediate velocity
(D) All of these
Very high velocity
Comments
The radioactive isotopes are formed by neutrons bombardment on the nucleus, these incident neutrons must have ___ to penetrate in the nucleus....?
This in-between phase of stellar nurseries and star formation in stellar evolution is when the gathered dust is still condensing to form a star....?
(A) Alpha Stage
(B) Stellar Genesis
(C) Protostar
(D) Star of Adam
Protostar
Comments
This in-between phase of stellar nurseries and star formation in stellar evolution is when the gathered dust is still condensing to form a star....?
If the electrostatic force between two electrons is F Newton, then the electrostatic force between two protons at the same distance is _____...?
(A) F
(B) 0N
(C) 2F
(D) 2/3 F
F
Comments
If the electrostatic force between two electrons is F Newton, then the electrostatic force between two protons at the same distance is _____...?
In a fission nuclear reaction , a heavy nucleus breaks up into smaller nuclei whereas in another nuclear reaction two or more than two possibly nuclei are fused to form a heavy nucleus This nuclear reaction is called ...?
(A) Chemical Reaction
(B) Nuclear reaction
(C) Fission nuclear reaction
(D) Fusion nuclear reaction
Fusion nuclear reaction
Comments
In a fission nuclear reaction , a heavy nucleus breaks up into smaller nuclei whereas in another nuclear reaction two or more than two possibly nuclei are fused to form a heavy nucleus This nuclear reaction is called ...?
The atmosphere near the earth’s surface is “heated from below.” Which of the following does not significantly contribute to this heating _____________________...?
(A) Conduction of heat upward from a hot surface
(B) Convection from a hot surface
(C) Absorption of infrared energy that has been radiated from the surface
(D) Heat energy from the earth’s interior
Heat energy from the earth’s interior
Comments
The atmosphere near the earth’s surface is “heated from below.” Which of the following does not significantly contribute to this heating _____________________...?