Answer:
The wave speed is calculated below:
Explanation:
Given,
number of waves passed per minute = 8
time period = 1 minute = 60 s
distance between successive wave crests = 20 m
waves passing interval per second =
Now,
wave speed = 20 m ×
= m/s
= 2.67 m/s
Hence the wave speed is 2.67 m/s.
Answer:
β 2 = 0.02575 mm
Explanation:
given data
wavelength = 563 nm
separation distance between adjacent bright fringes = 0.0290 mm
wavelength = 500 nm
solution
we get here separation distance between adjacent bright fringes that is express as
β = ..................................1
here D is distance from plane of slit to screen
and d is slit sepation that is constant
so
β 2 =
β 2 = 0.02575 mm
Answer:
<em>increasing the distance between the objects</em>
<em>decreasing the mass of one of the objects</em>
<em>decreasing the mass of both objects </em>
Explanation:
The complete question would be:
<em>Which changes would result in a decrease in the gravitational force between two objects? Check all that apply.</em>
<em>increasing the distance between the objects</em>
<em>decreasing the distance between the objects</em>
<em>increasing the mass of one of the objects</em>
<em>increasing the mass of both objects</em>
<em>decreasing the mass of one of the objects</em>
<em>decreasing the mass of both objects </em>
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Gravitational force between two objects can be computed using the formula:
Where:
Fg is the gravitational force (Newtons or N)
G is the gravitational constant (6.674⋅10⁻¹¹N(m/kg)²)
M is the mass of one object (Kilograms or Kg)
m is the mass of the other object (Kilograms or Kg)
r is the distance between the two objects (m)
Now notice the relationship between the mass and gravitational force. Their relationship is direct, meaning as the value of one goes up, the other goes up and the reverse holds true. If the mass of one or both of the objects decreases, the gravitational force also decreases.
Now look at the relationship between the distance between the objects and the gravitational force-- they are indirect. This means that as one increases, the other decreases. So if we increase the distance between the objects, the gravitational force between them decreases as well.