Answer:
Explanation:
gravity
A projectile is an object upon which the only force is gravity. Gravity acts to influence the vertical motion of the projectile, thus causing a vertical acceleration. The horizontal motion of the projectile is the result of the tendency of any object in motion to remain in motion at constant velocity.
Answer:
<em>The friction force has a magnitude of 54 N and points to the left</em>
Explanation:
<u>Friction Force</u>
When an object is moving and encounters friction in the air or rough surfaces, it loses acceleration because the friction force opposes motion.
The friction force when an object is moving on a horizontal surface is calculated by:
Where \mu is the coefficient of static or kinetics friction and N is the normal force.
If no forces other then the weight and the normal are acting upon the y-direction, then the weight and the normal are equal in magnitude:
N = W
Thus, the friction force is:
The ice skater accelerates a block to the right on frictionless horizontal ice and then stops pushing it. The block continues to move at a constant speed when it finds a sand-covered surface with a kinetic coefficient of friction of 0.36.
The friction force is:
Fr=0.36*150
Fr = 54 N
The friction force has a magnitude of 54 N and points to the left
Answer:
High-Level Clouds
Cloud types include: cirrus and cirrostratus.
High-level clouds form above 20,000 feet (6,000 meters) and since the temperatures are so cold at such high elevations, these clouds are primarily composed of ice crystals. High-level clouds are typically thin and white in appearance, but can appear in a magnificent array of colors when the sun is low on the horizon.
Mid-Level Clouds
Cloud types include: altocumulus, altostratus.
The bases of mid-level clouds typically appear between 6,500 to 20,000 feet (2,000 to 6,000 meters). Because of their lower altitudes, they are composed primarily of water droplets, however, they can also be composed of ice crystals when temperatures are cold enough.
Low-level Clouds
Cloud types include: nimbostratus and stratocumulus.
Low clouds are of mostly composed of water droplets since their bases generally lie below 6,500 feet (2,000 meters). However, when temperatures are cold enough, these clouds may also contain ice particles and snow.
Answer:
9:2
Explanation:
Series connection
Rt = R1 + R2 = 2 + 4 = 6 ohms
Parallel connection
1/Rt = 1/R1 + 1/R2 = 1/2 + 1/4 = (2+1)/4 = 3/4
1/Rt = 3/4
===> Rt = 4/3 = 1.33 ohms
ratio of series to parallel
6÷4/3 = 6×3/4 = 9:2
