Answer:
<em>a) Mechanical advantage is 0.2</em>
<em>b) maximum obtainable mechanical advantage is 1</em>
<em></em>
Explanation:
The opening of the door is only possible when a force is used to push the door, by generating a torque on the door around the hinge.
Since the door is 75 cm wide, torque generated will be the product of the force applied and the width of the door.
torque = F x 75 = 75F
If the door was pushed at point on the door 15 cm from the hinges, the torque that will be generated will be
torque = F x 15 = 15F
a)The mechanical advantage MA is therefore
MA = 15/75 = 0.2
b) <em>The best mechanical advantage that can be obtained from when you simply push it open is 1</em>
From the case above, if we assume we push it at its maximum width from the hinge, then
MA = 75/75 = 1
it’s c because a compound is two or more elements chemically reacting
Answer:
weight = 25*10 =250 N
Explanation:
g must be given in units of m/s^2
The weight of any type of body will be the product of his mass by the gravity
where:
m =mass [kg]
F = force [N] or [kg*m/s^2]
g = acceleration [m/s^2]
Answer:
False
Explanation:
Acceleration is the rate of change of velocity
Acceleration the negative acceleration means the speed of the object decreases
Negative acceleration does not mean that velocity will also negative
For example if the the speed of the object decreases from 20 m/sec to 15 m/sec in 5 sec then acceleration will be here acceleration is negative but velocity is positive
Cancer research, solar panel production and agricultural innovation will all be key areas for nano tech, and so will clothing design, cosmetics manufacturing and many others are some of the new developments.
<u>Explanation:</u>
Nanotechnology is also being applied to or developed for application to a variety of industrial and purification processes. Purification and environmental cleanup applications include the desalination of water, water filtration, wastewater treatment, groundwater treatment, and other nano remediation.
Nanotechnology offers the potential for new and faster kinds of computers, more efficient power sources and life-saving medical treatments. Potential disadvantages include economic disruption and possible threats to security, privacy, health and the environment.