The following list, which ranks stored energy from highest to lowest, also ranks spring constant from highest to lowest: X, W, Y, Z. Hence, option B is correct.
Potential energy is a form of stored energy that is dependent on the relationship among different components. When a spring is compressed or stretched, its potential energy increases. If a steel ball is raised above the floor as opposed to falling to the ground, it has more potential energy. It is capable of carrying out additional work when raised.
Potential energy is a feature of systems rather than of particular bodies or particles; for instance, the system created up of Earth and the elevated ball has more energy stored as they become further apart.
Potential energy develops in systems components whose configurations, or spatial arrangement, determine the amount of the forces they apply to one another.
The spring's potential elastic energy is stored as:
= (1/2) x (spring constant) x (distance compressed or stretched)²
So, the order from greatest to least will be:
X = 35
W = 24
Y = 22
Z = 15
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A) 30 m/s
The problem can be solved by using the law of conservation of momentum. In fact, the total momentum falcon+pigeon before the collision must be equal to the total momentum falcon+pigeon after the collision:
where
mf = 0.480 g is the mass of the falcon
uf = 45 m/s is the initial velocity of the falcon
mp = 0.240 g is the mass of the pigeon
up = 0 is the initial velocity of the pigeon
v is the final combined velocity of pigeon+falcon
Solving the equation for v, we find
B) 480 N
The average force on the pigeon during the impact is given by
where
is the change in momentum of the pigeon
is the duration of the collision
here we have:
- Change in momentum of the pigeon:
- Duration of the collision:
So the average force is
To determine the final speed of the falcon and pigeon, we need to use the principles of conservation of momentum. To calculate the average force on the pigeon during the impact, we can use the equation for impulse. The primary topic of this question is conservation of momentum and impulse.
To determine the final speed of the falcon and pigeon, we need to use the principles of conservation of momentum. Since the pigeon is assumed to be stationary, its initial momentum is zero. The final momentum of the falcon and pigeon combined must also be zero, according to the law of conservation of momentum. Using the equations for momentum and rearranging, we can solve for the final speed of both the falcon and pigeon.
To calculate the average force on the pigeon during the impact, we can use the equation for impulse, which is the change in momentum. Impulse is equal to force multiplied by the time of impact. Rearranging the equation, we can solve for force.
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False
Answer: False
Nitrogen and sulfur dioxide are acidic oxides in nature. The burning of fossil fuels and other sources are responsible for addition of these oxides in the atmosphere of earth. These oxides mixed with water vapor causes acid rain. Being acidic in nature they will have low pH value. Therefore, greater the concentration of sulfur and nitrogen oxides, will lower the pH value of precipitation.
Answer:
False
Explanation:
Answer:
What the other guy said
Answer:
It is false.
Explanation:
As the depth of water increases, the pressure also increases.
According to the formula
Where, h is the depth of water, d is the density of water and g be the acceleration due to gravity
As h increases, pressure also increases.
As depth increases, the temperature of the water also increases, because of geothermic energy of earth.
So, as depth increases, pressure and temperature both increases.
B. exothermic
C. isothermic
D. endothermic
E. all of the above
Answer : The correct option is, (D) Endothermic
Explanation :
Adiabatic : It is a process in which a heat is constant. That means no heat is lost or gained by the system.
Isothermic : It is a process in which a temperature is constant.
Exothermic : It is a process in which heat released from system to surrounding. In this process, surrounding temperature increases and system temperature decreases.
Endothermic : It is a process in which heat required from the surrounding. In this process, surrounding temperature decreases and system temperature increases.
When the temperature of water increases from room temperature to 90ºC the process of heating the water is endothermic.
Hence, the correct option is, (D) Endothermic