A parachutist falls at a speed of about 12 miles per hour. Find this speed in feet per second
Answers
12 mi/1hour
convert
1 hour=60 mins
1 min=60 seconds
1 hour=60 times 60 seconds=360 seconds
12 miles per 360 seconds
convert miles to feet
5280 feet per mile
12 miles times 5280=63360 feet
63360/360
do the math and simplify
63360/360=6336/36=176
176 feet per second
Final answer:
The parachutist's speed of 12 miles per hour can be converted to feet per second by using conversion factors (1 mile equals 5280 feet, and 1 hour equals 3600 seconds).
The resultant speed is approximately 17.6 feet per second.
Explanation:
To convert the parachutist's speed from miles per hour to feet per second, utilize the known conversion factors for miles to feet and hours to seconds. Bread down the problem into two conversions: first, convert miles to feet (1 mile is equivalent to 5280 feet).
Next, convert hours to seconds (1 hour is equivalent to 3600 seconds). The given speed is 12 miles per hour: start the conversion by multiplying it by the number of feet in a mile, then dividing that result by the number of seconds in an hour.
Step 1: Convert miles to feet: 12 miles * 5280 feet/mile = 63360 feet
Step 2: Convert hours to seconds: 1 hour/3600 seconds
From Step 1&2, combine the results to find the speed in feet per second:
63360 feet ÷ 3600 seconds = 17.6 feet per second
So, the parachutist is falling at a speed of 17.6 feet per second.
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A total of 60 boys and girls attended a basketball game. There were twice as many girls at the game as there were boys,How many boys were at the game?
A) 222
B) 111
C) 224
D) 116
Answers
Answer:
A = 222 units^2
Step-by-step explanation:
To find the area of this trapezoid, first draw an imaginary horizontal line parallel to AD and connecting C with AB (Call this point E). Below this line we have the triangle CEB with hypotenuse 13 units and vertical side (21 - 16) units, or 5 units. Then the width of the entire figure shown can be obtainied using the Pythagorean Theorem:
(5 units)^2 + CE^2 = (13 units)^2, or 25 + CE^2 = 169. Solving this for CE, we get |CE| = 12.
The area of this trapezoid is
A = (average vertical length)(width), which here is:
(21 + 16) units
A = --------------------- * (12 units), which simplifies to:
2
A = (37/2 units)(12 units) = A = 37*6 units = A = 222 units^2
Answers
Answer:
Protons and neutrons each count for one AMU, and the electron counts for zero AMU. So, if the atomic mass of oxygen is 16, that means we have a total of 16 protons and neutrons. 16 total protons and neutrons minus 8 protons leaves us with 8 neutrons.
Final answer:
To have 0 charge, the oxygen atom, with 8 electrons and 8 neutrons, must have 8 protons. The 8 protons, each carrying a positive charge, will balance out the negative charges from the 8 electrons and make the atom neutral.
Explanation:
The oxygen atom as described in the question has 8 electrons and 8 neutrons, both electrons with a negative charge and neutrons with no charge. Now, to make the atom neutral or have 0 charge, the positive charges in the atom (from the protons) must cancel out the negative charges (from the electrons). Considering each electron has a charge of -1, there's a total negative charge of -8 coming from the 8 electrons. In order to balance that and bring the total charge to 0, the oxygen atom must have 8 protons. Each proton carries a +1 charge, so 8 protons will carry a +8 charge, which perfectly balances out the -8 charge from the electrons and gives the atom a net charge of 0.
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Answers
Answer:
156 cm^2
Step-by-step explanation:
area of a paralelogram is Base times hieght
13 times 12
Answers
so there would have to be 7 runners
Answers
a) 10 - 3√2
b) 10 - √2
c) 7
d) -4
2. Evaluate 6 + √14 + x - √9x when x = 2. (Write as decimal)
a) 14.24
b) 7
c) 5.76
d) -4
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