During unfavorable environmental conditions, a seed or a plant may protect itself by going through an inactive stage in which it does not grow. this stage is called
Solved
Show answers
More tips
- P Philosophy Is Everything We Strive for Eventually Achieved and Destroyed?...
- S Sport How to Learn Swimming? Simple Tips for Beginners...
- P Photography and Videography Understanding HDR: How It Works and Why You Need It...
- G Goods and services Which TV is better - LCD or Plasma?...
- S Sport How to Learn to Pull Up on Monkey Bars?...
- L Leisure and Entertainment Scrapbooking: What is it and Why is it Becoming More Popular?...
- C Computers and Internet Where did torrents.ru move to?...
- B Business and Finance Understanding Cash Flow: What It Is and How It Works...
- C Computers and Internet What Are Peers and Seeds in Torrenting?...
- H Health and Medicine 10 Simple Techniques on How to Boost Your Mood...
Answers on questions: Physics
- P Physics 1. trial and error is discouraged in science because it wastes time. true false 2. conduction is the movement of energy from one substance to another by direct contact....
- P Physics How much heat is given off when 10 grams of water are cooled from 50ºC to 40ºC...
- P Physics A woman walks 3.30 km north and then 2.25 km east, all in 2.80 hours. (a) What is the magnitude (in km) and direction (in degrees north of east) of her displacement during...
- P Physics Is gasoline a compound or a mixture ?...
- P Physics The waste products of a nuclear fission power plant can best be described as...
- P Physics The diameter of a spherical balloon that is being filled with air is increasing at the rate of 3 inches more than the time, t. what will the volume, v, of the balloon...
- P Physics Which equation below represents a generic equation suggested by a graph showing a hyperbola? y = mx + b y = k2 y = k/x...
- M Mathematics What is the solution to the equation y/y-4 - 4/y+4 = 32/y^2-16?...
- M Mathematics Help me with this PLEASE...
- M Mathematics Why everyone giving out free points today?...
Ответ:
θ = 53.13° above horizontal
Explanation:
Ignore air resistance.
The time the ball takes to reach its max height will equal the time to travel half the max range R.
√(2h/g) = (R/2)/vcosθ
vsinθ/g = R/2vcosθ
2v²sinθcosθ = Rg
2v²sinθcosθ = 3hg
v² = u² + 2gh
0² = v²sin²θ + 2gh
v²sin²θ = 2gh
v² = 2gh/sin²θ
2v²sinθcosθ = 3hg
(2gh/sin²θ)2sinθcosθ = 3hg
(2/sinθ)2cosθ = 3
cotθ = 3/4
θ = 53.130