Answer:
normal force = 10 N
Explanation:
Given data
frictional force = 0.400 N
coefficient of kinetic friction = 0.04
Solution
we get here normal force that is express as
normal force = ............1
put here value and we will get value
normal force =
solve it we get
normal force = 10 N
V used to denote speed of the wave
Is determined by the product of the wave’s frequency and wavelength.
The number of times a wave oscillates or repeats again and again multiplied by the distance.
V = 12 • 1.5 = 12 • 3/2 = 18 m/s
The speed of the wave is 18 m/s.
Here when an object is placed on the level floor then in that case there are two forces on the object
1). Weight of object downwards (mg)
2). Normal force due to floor which will counterbalance the weight (N)
so when no force is applied on the box at that time normal force is counter balanced by weight.
Now here it is given that A person tried to lift the box upwards
So now there are two forces on the box
1). Applied force of person
2). Normal force due to ground
So now these two forces will counter balance the weight of the crate
So we can write an equation for force balance like
given that
here
m = 30 kg and
g = acceleration due to gravity = 10 m/s^2
now from above equation
So force applied by the person must be 150 N
I think the answer is 8.2 mm
Answer:
When appliances are linked in parallel, there is no voltage division.
Explanation:
A battery is a device that consists of one or more electrochemical cells with external connections that is used to power electrical devices such as torches and mobile phones. People frequently mistake cell and battery for the same thing. Nonetheless, it is important to understand that a cell is a single device that converts chemical energy into electricity, while a battery is a collection of cells. The benefit of connecting an electrical gadget to a battery in parallel is
- When appliances are linked in parallel, there is no voltage division. The potential difference across each appliance equals the voltage provided.
- By connecting electrical equipment in parallel, the overall effective resistance of the circuit can be decreased.
- Other components will continue to operate even if one fails; each has its own separate circuit.
- The current passing through each component is added together to generate the current flowing through the source.