Answer:
W = 30 N
Explanation:
Applying the summation of torques about the wedge for equilibrium, taking the clockwise direction as negative. Since the ruler is balanced horizontally about the wedge. Therefore, the summation of all torques acting about the wedge must be equal to zero.

<u>W = 30 N</u>
Slope of I-V graph is Resistance.
Its S.I. unit is Ohm.
The symbol of ohm is Ω.
Answer:
acceleration of the balloon is 11.4 m/s²
and
The instruments accelerate downwards at 9.8 m/s²
Explanation:
given data
mass = 5 kg
force = 106 N
acceleration of gravity = 9.8 m/s²
to find out
the acceleration of the balloon and the instruments
solution
we find weight of the instruments that is
weight W = mg
here m is mass and g is acceleration of gravity
W = 5 ×9.8
weight W = 49 N
and
so net upward force on the instruments is
net upward force F = 106 - 49
net upward force F = 57 N
and
The acceleration of the balloon is
Force = ma
57 = 5 a
a = 11.4 m/s²
acceleration of the balloon is 11.4 m/s²
and
The instruments accelerate downwards at 9.8 m/s²
Answer:
water and air
Explanation:
The examples of medium from this problem is water and air.
A medium is an agency or a means of propagating energy, waves or even facilitating a chemical reaction.
Fluids are very good medium in chemistry for chemical reactions. The two most common media used are air and water.
In physics, a vacuum is an empty space that has been evacuated. It also serves as a medium to study some physical phenomenon.
Answer:
Option B - The fringe spacing will increase
Explanation:
We are given;
Wavelength; λ = 532nm
slit separation; d = 20um
For double-slit experiment, the fringe width is given by the expression;
β = λD/d
Where;
β is the fringe width
λ is the wavelength
D is the distance between the screen and the slit
d is the slit separation
Now, when immersed in water, the slit separation distance will decrease.
Now, from the fringe width equation, when "d" decreases, it means that we will have a bigger value of fringe width.
Thus, as slit separation decreases, the fringe width increases.