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Romashka [77]
3 years ago
7

The bar graph below shows the number of tickets sold for each of the seating sections in a baseball stadium.

Physics
2 answers:
Juliette [100K]3 years ago
6 0
A. 800 bleacher seats were sold
frosja888 [35]3 years ago
4 0
800 bleachers was sold
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Help please
olga nikolaevna [1]

Answer:

6.8 m/ s^2

Explanation:

a = f / m

a = (67N - 6N) / 9 kg

a= 6.8 m/ s^2

8 0
3 years ago
A piston in a gas supply pump has an
KonstantinChe [14]

Answer:

A. 60 Joule

Explanation:

First find the force given the pressure and area.

F = AP

F = 500 cm² × (1 m / 100 cm)² × 4000 N/m²

F = 200 N

Now find the work:

W = Fd

W = 200 N × 30 cm × (1 m / 100 cm)

W = 60 J

5 0
3 years ago
Read 2 more answers
At t = 0, a car registers at 30 miles/hr. Forty seconds later, the car’s velocity is now at 50 miles/hr. Assuming constant accel
madreJ [45]

Answer: Choice A) 0.44 miles

=================================================

Work Shown:

1 hour = 60 minutes

1 minute = 60 seconds

1 hour = 60*60 = 3600 seconds

40 seconds = 40*(1/3600) = 40/3600 = 1/90 hours

The car travels 1/90 of an hour. Let t = 1/90.

The initial velocity is vi = 30 mph.

The final velocity is vf = 50 mph.

Apply one of the kinematics equations as given below.

x = distance traveled

x = 0.5*(vi+vf)*t

x = 0.5*(30+50)*(1/90)

x = 0.44444444444444 which is approximate

x = 0.44

The car traveled roughly 0.44 miles. This matches with choice A.

I'm assuming choice A is supposed to say 0.44 instead of 0.442; otherwise, I think your teacher made a typo by putting that 2 in there. Each of the other answer choices are accurate to 2 decimal places, so it would make sense that choice A is also accurate to 2 decimal places as well.

If 0.442 was intended by your teacher, and it's not a typo, then the answer would be E) None of the choices given.

8 0
3 years ago
You do a demonstration of photosynthesis for your friends with the aquatic plant Elodea outside on a sunny day. You put the plan
son4ous [18]

Answer:

Hydrogen gas/bubbles

Explanation:

Photosynthesis is defined as the process by which green plants and other organisms like blue-green algae etc. synthesize organic matter. In the presence of light energy, they convert CO2 and H2O into organic sugar with the release of O2 gas.

The plant was performing photosynthesis since there is the presence of CO2 (baking soda) and water and therefore the bubbles seen is hydrogen gas guven off from photosynthesis .

6CO2(g) + 6H2O(l) --> C6H12O6(s) + 6O2(g)

7 0
3 years ago
A 1430 kg car speeds up from 7.5 m/s to 11 m/s in 9.3 s. Ignoring friction, how much power did that require?
katrin [286]
Hope it helped you.

8 0
3 years ago
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