Answer:
It takes 1 second to drop 26.4 meters, for acceleration due to gravity, the acceleration would double from the meters and would be 52.8 m/s^2.
Is there more information above question 4?
<span>D) Electromagnetic radiation travels in the form of longitudinal waves.</span>
Answer:
u = 5 m/s
Explanation:
given,
Mass of ice skater, M = 45 Kg
initial speed = 0 m/s
mass of the ball, m = 5 Kg
velocity of skater and the ball,V = 0.5 m/s
speed of the ball = ?
using conservation of momentum
m u + M u' =( M + m ) V
initial speed of ice skater is zero
5 x u + 45 x 0 =( 45 + 5 ) V
5 u = 50 x 0.5
5 u = 25
u = 5 m/s
hence, the speed of the ball is equal to 5 m/s
The three most normal units of estimation for temperature are Celsius, Fahrenheit, and Kelvin.
A thermometer is an instrument that measures temperature. It can gauge the temperature of a strong, for example, food, fluid like water, or gas like air.
The Celsius scale is important for the decimal measuring standard. The decimal standard of estimation additionally incorporates units of mass, like kilograms, and units of length, like kilometers. Most logical fields measure temperature utilizing the Celsius scale. Zero degrees Celsius is the edge of freezing over water, and 100 degrees Celsius is the limit of water. Three countries don't utilize the Celsius scale. The United States, Burma, and Liberia utilize the Fahrenheit scale to quantify temperature. In any case, even in these nations, researchers utilize the Celsius or kelvin scale to gauge temperature. Water freezes at 32 degrees Fahrenheit and bubbles at 212 degrees Fahrenheit. The Kelvin scale is utilized by physicists and different researchers who need to record exceptionally exact temperatures. The Kelvin scale is the main unit of estimation to incorporate the temperature for "outright zero," the complete shortfall of any intensity energy.
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