A phenomenon at low temperatures in systems consisting of large numbers of bosons whose total number is conserved in collisions.
Answer:
Blue Lighting
Explanation:
In order to make red look black, you must use blue light. The blue would be absorbed and there would be no red light to reflect.
Answer:(a) The answer is (2)(a factor of 1). The stopping distance does not change. That is because both the kinetic energy and the friction force double.
(b) 4) 0.25
The ball initial velocity is 9.1 m/s
Explanation:
The motion of the ball in this problem is a projectile motion, so it follows a parabolic path, which consists of two independent motions:
- A uniform motion (constant velocity) along the horizontal direction
- An accelerated motion with constant acceleration (acceleration of gravity) in the vertical direction
First of all, we analyze its vertical motion to find the time of flight. We can do it by using the following suvat equation:
(1)
where
:
is the initial vertical velocity (0 because the ball is kicked horizontally)
is the acceleration of gravity
s = -6.0 m is the vertical displacement (the height of the building)
t is the time of flight
Solving for t,
Now we can analyze the horizontal motion; the horizontal velocity is constant and it is given by
where
d = 10.0 m is the horizontal distance covered
t = 1.1 s is the time of flight
Substituting, we find
Learn more about projectile motion:
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<span>b) moving at a constant speed
velocity references movement in a specific direction, speed only references movement in general</span>