Answer:
More people give more importance to their body because they want to be liked and fit in. They would rather fail in school and mess up their education to show off their body to be one of those cool kids in school.
Explanation:
Answer:
3- A ball of mass 0,50 kg falls and hits the floor at 10m/s,
It rebounds at speed 8.0 m/s, as shown.
before collision
after collision
10 m/s
8 m/s
The collision between the ball and the floor lasts for 0.50 s.
What is the average force acting on the ball during the collision?
Answer:
266 g or 0.266 kg
Explanation:
The formula for specific heat capacity is given as,
Q = cm(t₂-t₁) ..................... Equation 1
Where Q = Heat Energy, c = specific heat capacity of Aluminum, m = mass of the aluminum fins, t₁ = initial temperature, t₂ = final temperature.
make m the subject of the equation,
m = Q/c(t₂-t₁)................... Equation 2
Given : Q = 2571 J, c = 0.897 J/g.°C, t₁ = 15.73 °C, t₂ = 26.50 °C.
Substitute into equation 2
m = 2571/[0.897×(26.5-15.73)]
m = 2571/9.661
m = 266 g or 0.266 kg
Hence the mass of the Aluminum fins = 266 g or 0.266 kg
Therefore, the ball has a velocity of 4m/s.
This question is stated in a complicated way, but all the information we need is right there waiting to be untangled.
We'll start the clock when Todd arrives. At that time:
-- Kate has 5 done. Todd has none yet. Todd is 5 units behind.
From then on:
-- The clock is running. Kate adds 4 an hour to her total. Todd adds 5 an hour.
-- She started out 5 ahead of Todd when he arrived, but Todd does 1 more than Kate every hour.
-- So Kate's 'lead' shrinks by 1 every hour.
-- So <em>Todd will catch up with Kate</em> <em>in 5 hours</em>.
That's the answer to the question ... How long ? It doesn't ask us how many stockings have been filled, but that's easy for us to figure out:
-- Kate had 5 done when the clock started. She fills 4 every hour. After 5 hours, she has (5 x 4) = 20 more filled, and a total of 25 ready to sell.
-- Todd started out with none done. He fills 5 every hour. After 5 hours, he has (5 x 5) = 25 filled and ready to sell. He has caught up with Kate in 5 hours.
