Answer:
On a velocity-time graph… slope is acceleration. the "y" intercept is the initial velocity. when two curves coincide, the two objects have the same velocity at that time.
<h3>Answer</h3><h3>option B</h3><h3>38 N</h3><h3>Explanation</h3>
Given that,
mass of block A = 14kg
mass of block B = 12kg
angle alpha equals = 19°
<h3>Formula to find tension in the wire connecting blocks A and B</h3>
Tension in wire connecting weight of object A and B is due to weight of block B
= mgsin19
due to slope we will take horizontal components of weight, mg
= 12(9.81)sin(19)
= 38.3
In transistor,
Emitter current is equal to the sum of base current and collector current.
Thanks!
Answer:
the ratio of the force produced by a machine to the force applied to it, used in assessing the performance of a machine.
Explanation:
Mechanical advantage is a measure of the force amplification achieved by using a tool, mechanical device or machine system. The device preserves the input power and simply trades off forces against movement to obtain a desired amplification in the output force. The model for this is the law of the lever.
Main answer: 26.78-kg
Supporting answer: Center of mass
Center of mass of a body is defined as the point at which the whole mass of the body is acting upon. Every body, has its own center of mass. For example, a square has its center of mass at the point where the diagonals of it intersect as well as a circle has its center of mass at the point where it got originated.
All 3-dimensional bodies has 3 axes of rotation. They are x, y and z axes respectively. These axes are used to point the center of mass accurately where it is located.
The co-ordinate in z-axes where the center of mass of a body is found is called as z-coordinate of the mass center(∑).
Now,
We are given with 3 units and its mass. They are:
- Circular disk of 2.5-kg
- Round shaft of 2.5-kg
- Square plate of 3.4-kg
We need to find the z-coordinate of the mass center of these units when present in a 3-dimensional plane.
As the round shaft is placed perpendicular to z plane as it is to hold the square plate we have z value to be 90 for round shaft.
Thus, it can be simplified as:
∑=
Therefore, the value of z-coordinate of mass center is 26.78kg.
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