Answer:
The coefficient of static friction is : 0.36397
Explanation:
When we have a box on a ramp of angle 
, and the box is not sliding because of friction, one analyses the acting forces in a coordinate system system with an axis parallel to the incline.
In such system, the force of gravity acting down the incline is the product of the box's weight times the sine of the angle:
Recall as well that component of the box's weight that contributes to the Normal N (component perpendicular to the ramp) is given by:
and the force of static friction (f) is given as the static coefficient of friction (
) times the normal N:
When the box starts to move, we have that the force of static friction equals this component of the gravity force along the ramp:
Now we use this last equation to solve for the coefficient of static friction, recalling that the angle at which the box starts moving is 20 degrees:
Answer:
There is no scientific evidence that playing specifically l badminton makes you a better person, but sport and exercise in general release hormones which can make you feel more happy therefore making you nicer to the people around you and 'a better person'.
Answer:
Voltmeter
Explanation:
A voltmeter is usually defined as an instrument that is commonly used to measure the electric potential difference acting between the two ends of a circuit. The unit of voltmeter is volts. Here, connections are made in parallel arrangement.
An ammeter is a device that is commonly used to measure the amount of flowing current within a circuit. The unit of current is in terms of amperes (A). Here, connections are made in series.
A voltmeter is usually comprised of high internal resistance in comparison to an ammeter because a high internal resistance results in the heating up of the battery and subsequent dropping its voltage and after the equipments are being cuts off, it leaves behind certain amount of energy.
