Plant trees around the perimeter of his fields
Answer:
15.7 m
Explanation:
The range (horizontal distance) of the projectile is determined only by its horizontal motion.
The horizontal motion is a motion with constant speed, which is equal to the initial horizontal velocity of the object:
![v_x = v cos \theta](https://tex.z-dn.net/?f=v_x%20%3D%20v%20cos%20%5Ctheta)
where
v = 12.0 m/s is the initial velocity
is the angle between the direction of v and the horizontal
Substituting,
![v_x = (12.0 m/s)(cos 51.0^{\circ} )=7.55 m/s](https://tex.z-dn.net/?f=v_x%20%3D%20%2812.0%20m%2Fs%29%28cos%2051.0%5E%7B%5Ccirc%7D%20%29%3D7.55%20m%2Fs)
We know that the projectile hits the ground in a time of
t = 2.08 s
so the horizontal distance covered is
![d = v_x t = (7.55 m/s)(2.08 s)=15.7 m](https://tex.z-dn.net/?f=d%20%3D%20v_x%20t%20%3D%20%287.55%20m%2Fs%29%282.08%20s%29%3D15.7%20m)
Answer:
a. 1/1000 sec
Explanation:
Shutter speed is the length of time that the film you’re photographing is being exposed to the scene in film photography. However, in digital photography, shutter speed is the length of time that the image sensor sees the scene the photographer is trying to capture.
For shutter speeds, the greater the denominator the higher the speed and the lower the denominator, the lower the speed.
Thus, the fastest one is option A.
The ice cubes were floating in water because they are less dense than liquid water. When water is frozen, a structure that is crystalline is formed that is held by hydrogen bonding. Due to the orientation of these bonds, the moleules would push far away from each other causing it to have a bigger volume and a lower density.