Out of that list, the concave mirror is the only item that can concentrate sunlight and heat into a small area. But if you could get ahold of a convex lens, that would be even better.
Answer:
The ball took 0.4 seconds
Explanation:
» From the second newton's equation of motion.

- s is displacement, s = 80cm, s = 0.8 meters
- u is initial velocity, u = 0 [ from rest ]
- g is 10 m/s²

The two forces acting on your body are the weight and the normal force
Explanation:
As you sit on your chair in front of the computer, there are 2 forces acting on you:
- The force of gravity, of magnitude
(where m is your mass and
is the acceleration of gravity), acting downward - The normal reaction exerted by the chair on your body, N, acting upward, and balancing your weight
We can apply Newton's second law to this situation; the law states that the net force acting on an object is equal to the product between the mass of the object and its acceleration:

where
is the net force
m is the mass
a is the acceleration
For your body sitting on the chair,

we also know that your body is at rest, so the acceleration is zero:

This means that the net force is zero, and therefore:

Learn more about Newton's second law of motion:
brainly.com/question/3820012
#LearnwithBrainly
Ask A Question, Research, Hypotheses, Test, Work or Not, Analyze, Tell People
Answer:
What are you asking me? Tex{t} x1|2?3 squ{R] oo|t?
Explanation: