The force of Earth's gravity acting on a body is given by the formula F = m x g, where F is the force, m is the mass of the body, and g is the acceleration due to gravity. On Earth, the standard acceleration due to gravity is approximately 9.8 m/s² ; option [B]. For a body with a mass of 1 kg, the fRead more
The force of Earth’s gravity acting on a body is given by the formula F = m x g, where F is the force, m is the mass of the body, and g is the acceleration due to gravity. On Earth, the standard acceleration due to gravity is approximately 9.8 m/s² ; option [B]. For a body with a mass of 1 kg, the force of gravity can be calculated as follows: F = 1 kg x 9.8 m/s². This results in a force of 9.8 Newtons. Therefore, a body of mass 1 kg experiences a gravitational force of 9.8 N when subjected to Earth’s gravity.
This value is critical for understanding basic physics principles and is commonly used in various calculations involving weight and gravitational forces. Thus, the correct option is [B] 9.8 N, which accurately represents the gravitational force on a 1 kg mass at the Earth’s surface.
On removing butter from milk, the density of milk increases. Butterfat is less dense than the liquid portion of milk; option [A]. When butter is removed through processes such as churning, the remaining milk primarily consists of water, proteins, lactose, and minerals, which are denser than the origRead more
On removing butter from milk, the density of milk increases. Butterfat is less dense than the liquid portion of milk; option [A]. When butter is removed through processes such as churning, the remaining milk primarily consists of water, proteins, lactose, and minerals, which are denser than the original mixture containing the fat. The removal of the less dense butterfat leads to an overall increase in the density of the remaining liquid. This principle is observed in the production of skim milk, which is denser than whole milk due to the absence of the lighter fat component.
This change in density is significant in dairy processing and affects the physical properties and nutritional content of the milk. Therefore, understanding this concept is important for industries and consumers alike. Hence, the correct option is [A] Density of milk increases, reflecting the increased density of the milk after butterfat has been removed.
Shock absorbers are usually made of steel because its elasticity is high; option [C]. High elasticity means that steel can deform under stress and return to its original shape without permanent deformation. This property is crucial for shock absorbers, which need to absorb and dissipate energy fromRead more
Shock absorbers are usually made of steel because its elasticity is high; option [C]. High elasticity means that steel can deform under stress and return to its original shape without permanent deformation. This property is crucial for shock absorbers, which need to absorb and dissipate energy from impacts and vibrations repeatedly. Steel’s high elasticity ensures that it can handle these repeated stresses without breaking or losing its structural integrity. Additionally, steel is durable and has good tensile properties, meaning it can withstand significant forces without breaking. These characteristics make steel an ideal material for shock absorbers, ensuring they provide reliable performance and longevity in various applications, such as in vehicles and machinery. Therefore, the correct option is [C] Its elasticity is high, reflecting the essential property that makes steel suitable for this purpose.
There is no atmosphere on the Moon because its escape velocity is less than the root mean square velocity of atoms; option [D]. This means that gas molecules on the Moon can easily escape into space due to insufficient gravitational pull. Consequently, over time, the Moon lost its atmosphere, resultRead more
There is no atmosphere on the Moon because its escape velocity is less than the root mean square velocity of atoms; option [D]. This means that gas molecules on the Moon can easily escape into space due to insufficient gravitational pull. Consequently, over time, the Moon lost its atmosphere, resulting in its current lack of significant atmospheric gases. This phenomenon contrasts with Earth, which has a sufficiently strong gravitational pull to retain its atmosphere. The Moon’s proximity to the Earth or its revolution around the Sun doesn’t directly affect its lack of atmosphere. While sunlight does reach the Moon, the absence of a significant atmosphere prevents it from creating conditions conducive to atmospheric processes like those on Earth. Therefore, the correct option is [D] Here the escape velocity of atoms is less than their root mean square velocity, elucidating the fundamental reason for the Moon’s lack of atmosphere.
One Horse Power (H.P) is equal to 746 watts; option [C]. This conversion factor is crucial in engineering and physics, especially in determining the power output of engines, motors, and other mechanical devices. It originates from the work of James Watt, who developed the concept of horsepower to coRead more
One Horse Power (H.P) is equal to 746 watts; option [C]. This conversion factor is crucial in engineering and physics, especially in determining the power output of engines, motors, and other mechanical devices. It originates from the work of James Watt, who developed the concept of horsepower to compare the power of steam engines to that of draft horses. Over time, it became a standard unit of power measurement globally. Option [C] 746 watts accurately represents this conversion factor, highlighting the significant relationship between horsepower and watts in quantifying mechanical power. This conversion facilitates efficient communication and calculation in various fields, ensuring consistency and accuracy in power measurements across different systems and applications.
Which one of the following is the correct value of the force of Earth’s gravity acting on a body of mass 1 kg?
The force of Earth's gravity acting on a body is given by the formula F = m x g, where F is the force, m is the mass of the body, and g is the acceleration due to gravity. On Earth, the standard acceleration due to gravity is approximately 9.8 m/s² ; option [B]. For a body with a mass of 1 kg, the fRead more
The force of Earth’s gravity acting on a body is given by the formula F = m x g, where F is the force, m is the mass of the body, and g is the acceleration due to gravity. On Earth, the standard acceleration due to gravity is approximately 9.8 m/s² ; option [B]. For a body with a mass of 1 kg, the force of gravity can be calculated as follows: F = 1 kg x 9.8 m/s². This results in a force of 9.8 Newtons. Therefore, a body of mass 1 kg experiences a gravitational force of 9.8 N when subjected to Earth’s gravity.
See lessThis value is critical for understanding basic physics principles and is commonly used in various calculations involving weight and gravitational forces. Thus, the correct option is [B] 9.8 N, which accurately represents the gravitational force on a 1 kg mass at the Earth’s surface.
On removing butter from milk
On removing butter from milk, the density of milk increases. Butterfat is less dense than the liquid portion of milk; option [A]. When butter is removed through processes such as churning, the remaining milk primarily consists of water, proteins, lactose, and minerals, which are denser than the origRead more
On removing butter from milk, the density of milk increases. Butterfat is less dense than the liquid portion of milk; option [A]. When butter is removed through processes such as churning, the remaining milk primarily consists of water, proteins, lactose, and minerals, which are denser than the original mixture containing the fat. The removal of the less dense butterfat leads to an overall increase in the density of the remaining liquid. This principle is observed in the production of skim milk, which is denser than whole milk due to the absence of the lighter fat component.
This change in density is significant in dairy processing and affects the physical properties and nutritional content of the milk. Therefore, understanding this concept is important for industries and consumers alike. Hence, the correct option is [A] Density of milk increases, reflecting the increased density of the milk after butterfat has been removed.
See lessShock absorber are usually made of steel because
Shock absorbers are usually made of steel because its elasticity is high; option [C]. High elasticity means that steel can deform under stress and return to its original shape without permanent deformation. This property is crucial for shock absorbers, which need to absorb and dissipate energy fromRead more
Shock absorbers are usually made of steel because its elasticity is high; option [C]. High elasticity means that steel can deform under stress and return to its original shape without permanent deformation. This property is crucial for shock absorbers, which need to absorb and dissipate energy from impacts and vibrations repeatedly. Steel’s high elasticity ensures that it can handle these repeated stresses without breaking or losing its structural integrity. Additionally, steel is durable and has good tensile properties, meaning it can withstand significant forces without breaking. These characteristics make steel an ideal material for shock absorbers, ensuring they provide reliable performance and longevity in various applications, such as in vehicles and machinery. Therefore, the correct option is [C] Its elasticity is high, reflecting the essential property that makes steel suitable for this purpose.
See lessThere is no atmosphere on the Moon, because
There is no atmosphere on the Moon because its escape velocity is less than the root mean square velocity of atoms; option [D]. This means that gas molecules on the Moon can easily escape into space due to insufficient gravitational pull. Consequently, over time, the Moon lost its atmosphere, resultRead more
There is no atmosphere on the Moon because its escape velocity is less than the root mean square velocity of atoms; option [D]. This means that gas molecules on the Moon can easily escape into space due to insufficient gravitational pull. Consequently, over time, the Moon lost its atmosphere, resulting in its current lack of significant atmospheric gases. This phenomenon contrasts with Earth, which has a sufficiently strong gravitational pull to retain its atmosphere. The Moon’s proximity to the Earth or its revolution around the Sun doesn’t directly affect its lack of atmosphere. While sunlight does reach the Moon, the absence of a significant atmosphere prevents it from creating conditions conducive to atmospheric processes like those on Earth. Therefore, the correct option is [D] Here the escape velocity of atoms is less than their root mean square velocity, elucidating the fundamental reason for the Moon’s lack of atmosphere.
See lessOne Horse Power (H.P) is equal to how many watts?
One Horse Power (H.P) is equal to 746 watts; option [C]. This conversion factor is crucial in engineering and physics, especially in determining the power output of engines, motors, and other mechanical devices. It originates from the work of James Watt, who developed the concept of horsepower to coRead more
One Horse Power (H.P) is equal to 746 watts; option [C]. This conversion factor is crucial in engineering and physics, especially in determining the power output of engines, motors, and other mechanical devices. It originates from the work of James Watt, who developed the concept of horsepower to compare the power of steam engines to that of draft horses. Over time, it became a standard unit of power measurement globally. Option [C] 746 watts accurately represents this conversion factor, highlighting the significant relationship between horsepower and watts in quantifying mechanical power. This conversion facilitates efficient communication and calculation in various fields, ensuring consistency and accuracy in power measurements across different systems and applications.
See less