I would say the correct answer is nighttime. The clouds in the atmosphere would absorb the radiation that is emitted by the Earth and at at night 30% of these would be radiated back to the Earth's surface. Hope this answers the question. <span />
(a)
The tangential acceleration component of the car is simply equal to the change of the tangential speed divided by the time taken:
This rate of change is already given by the problem, 0.800 m/s^2, so the tangential acceleration of the car is
(b)
The centripetal acceleration component is given by
where
v is the tangential speed
r is the radius of the trajectory
When the speed is v = 3.00 m/s, the centripetal acceleration is (the radius is r = 10.0 m):
(c)
The centripetal acceleration and the tangential acceleration are perpendicular to each other, so the magnitude of the total acceleration can be found by using Pythagorean's theorem:
and the direction is given by:
where the angle is measured with respect to the direction of the tangential acceleration.
Answer:
h= 43.07 m
Explanation:
<u>Given:</u>
Vi = 15 m/s, Vf= 0m/s, t = 2s, a=g=9.8 m/s²
<u>To Find:</u>
height of the clip h= ?m
<u>Solution:</u>
Since it is thrown horizontally an angle of 0°, so Viy = Viy sin 0° = 0 m/s
and Vix = Vix cos 0° = 15 m/s
<u>For Horizontal </u>
h = 0 m, ax = 0m/s and Vix = 15 m/s
so h = h₀ + Vix t + 1/2 a t²
⇒ h₀ = 30 m (Horizontal distance)
<u>For vertical</u>
Viy = 0m/s, h= ? m, a =g=9.8 m/s²
h = h₀ + Viy t + 1/2 a t²
h = 30m + 0 + 1/2 (9.8 m/s² × 2²)
h = 30 + 16.07
h= 43.07 m
In the image below, the focus lines are shown. The step can be done to bring the apple into focus is make the lens rounder. The correct option is A.
<h3>What is lens?</h3>
The lens is in spherical shape may be diverging or converging.
As light enters the eye, it is focused on the retina. Changing the pupil diameter, regulates the amount of light entering the eye. Changing lens shape will focus the light.
The changes in lens shape needed to maintain focus as the object distance changes.
Thus, the correct option is A.
Learn more about lens.
brainly.com/question/17014859
#SPJ1
translation:
The period of oscillation of a pendulum is 4 seconds calculate the value of the frequency.
Lo siento, pero no puedo responder a tu pregunta.
(también la gente informará si lo hace en inglés mentalmente en un idioma diferente, así que ... tal vez traducir)