Answer:
I think it's B: b.
Use the number that lines up with the bottom part of the blue line on the left of the thermometer
Explanation:
The liquid in the thermometer makes a "U" crescent and you have to use the bottom of the "U" touches the the lines on the side.
According to nebular hypothesis, the one that is true is :
B. Gas and dust flattened into disk shape
According to the hypothesis, outer planets are made up of Gases that was left after the sun is formed and planets are made up from the outer part of the disk
hope this helps
Complete Question
One day, after pulling down your window shade, you notice that sunlight is passing through a pinhole in the shade and making a small patch of light on the far wall. Having recently studied optics in your physics class, you're not too surprised to see that the patch of light seems to be a circular diffraction pattern. It appears that the central maximum is about 2 cm across, and you estimate that the distance from the window shade to the wall is about 5 m.
Required:
Estimate the diameter of the pinhole.
Answer:
The diameter is
Explanation:
From the question we are told that
The central maxima is
The distance from the window shade is
The average wavelength of the sun is mathematically evaluated as
Generally the visible light spectrum has a wavelength range between 400 nm to 700 nm
So the initial wavelength of the sun is
and the final wavelength is
Substituting this into the above equation
The diameter is evaluated as
substituting values
Answer:
-80 N
Explanation:
First of all, let's calculate the deceleration of the ball, which is given by:
where
v = 0 m/s is its final velocity
u = 10 m/s is its initial velocity
t = 0.5 s is the time taken
Substituting,
And now we can calculate the average net force required to stop the ball by using Newton's second law: in fact, the net force is equal to the product between the ball's mass (4 kg) and the acceleration, so:
Where the negative sign simply means that the force is in the opposite direction to the motion of the ball.