Answer:
b
Explanation:because endothermic contains heat so cookies need heat
Answer:
The car will travel a distance of 17.45 meters.
Explanation:
Given:
Initial velocity 
= 0
Final velocity 
= 7.6 m/s
Time taken = 4.6 s
Acceleration = (Final velocity - Initial Velocity )/time
We have to calculate total distance traveled by the car.
Let the distance traveled be 'd'
Equation of motion:
Plugging the values.
⇒
⇒
⇒
The car will travel a distance of 17.45 meters for the above case.
Answer:
-2.25
Real and inverted image
Explanation:
u = Object distance = 16 cm
v = Image distance = 36 cm
f = Focal length
Lens Equation
Focal length of the lens is 11.07 cm. Positive value indicates the lens is a convex lens
Magnification
Since magnification is negative the image inverted
I found some good web pages with highly detailed answers to predicting the range of a trebuchet. A very simple model we have used in my Intro to Eng class just uses the mass of the projectile (m2), the mass of the counter weight (m1), and the height the counter weight falls (h):
Range (max) = 2 * (m1/m2) * h
Now the efficiency of the trebuchet will cause this model to be off by quite a bit. But once you have a working trebuchet, we find this model works well when we vary m1, m2, or h. We assume we have a take off angle of 45 degrees above the horizon.
This solution is based on the classic max range ballistics problem - 45 degree take off angle. It also assumes converting all the potential energy of the counter weight to kinetic energy of the projectile. That is why the efficiency issue comes up as a lot of energy is lost due to friction in the moving trebuchet. If the projectile spins a lot then it will travel a shorter distance as the potential energy is split into kinetic and rotational energy. Projectile shape and wind will also vary the results.
Good luck.
