Answer:
Maximum kinetic energy at point D.
Explanation:
Mechanical energy is the sum of the potential energy and the kinetic energy.
The energy possessed due to the motion of an object is called as its kinetic energy. Mathematically, it can be written as :
Where
v is the velocity of the particle
At maximum height, the object will have only potential energy i.e. least kinetic energy. While at lowest point the potential energy is zero i.e. maximum kinetic energy.
Hence, point D represents the maximum kinetic energy.
The relative humidity is 100%.
To find the answer, we have to know about the relative humidity.
<h3>What is the relative humidity?</h3>
- The amount of water vapor in the air is referred to as humidity.
- The gaseous and invisible condition of water is called water vapor.
- Humidity can be expressed in a variety of ways, including absolute humidity, relative humidity, mixing ratio, and dew point temperature.
- Relative humidity can be expressed as,
- Here, it is given that, the vapor pressure is the same as the saturation vapor pressure, thus,
Thus, we can conclude that, the relative humidity is 100%.
Learn more about the relative humidity here:
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The most common group of silicates is quartz. Silicate minerals is the most abundant mineral found in the crust. About 90% of the crust contains these minerals. Silicate minerals includes quartz, mica, feldspar, pyroxene, amphobole and olivine. About 12% of these silicates is quartz.
The amount of force needed by the truck to move the boulder is 200 N.
<h3>Force:</h3>
This can be defined as the product of mass and acceleration. The S.I unit of force is Newton or kgm/s²
To calculate the newton's of force a block needs to move, we use the formula below.
Formula:
- W = Fd............. Equation 1
Where:
- W = Work done by the truck
- F = Force applied on the boulder
- d = Distance moved by the boulder
Make F the subject of the equation
- F = W/d................. Equation 2
From the question,
Given:
Substitute these values into equation 2
Hence, the amount of force needed by the truck to move the boulder is 200 N.
Learn more about force here: brainly.com/question/12970081
Torque, moment, or moment of force is the tendency of a force to rotate an object around an axis,fulcrum, or pivot. Just as a force is a push or a pull, a torque can be thought of as a twist to an object. Mathematically, torque is defined as the cross product of the vector by which the force's application point is offset relative to the fixed suspension point (distance vector) and the force vector, which tends to produce rotational motion. So torque about the center of the sun due to the gravitational force of attraction of the sun on the planet = (Gxm1xm2 / r^2). r sin(theta) = Gxm1xm2 /r^2). r sin0° = 0
