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Amanda [17]
3 years ago
10

The answer is A and no matter how many times I tried I can't get it.

Physics
1 answer:
ryzh [129]3 years ago
5 0
Imagine a skinny straw in the water, standing right over the hole. The WEIGHT of the water in that straw is the force on the tape. Now, the volume of water in the straw is (1 mm^2) times (20 cm). Once you have the volume, you can use the density and gravity to find the weight. And THAT's the force on the tape. If the tape can't hold that force, then it peels off and the water runs out through the hole. /// This is a pretty hard problem, because it involved mm^2, cm, and m^3. You have to be very very very careful with your units as you work through this one. If you've been struggling with it, I'm almost sure the problem is the units.
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What is a good topic sentence when writing about what happens to your body if you drink a Coke ?
Romashka-Z-Leto [24]
Based on research by health writer Wade Meredith, it explains that a 330ml can of Coca Cola contains so much sugar, your body should vomit - but the phosphoric acid "cuts the flavor", helping you keep the liquid down.

After 40 minutes, your blood sugar has spiked, your pupils dilated, and your blood pressure has risen.

• Here's what to drink to be healthy

The body starts to produce more dopamine, a neurotransmitter that controls the brain's pleasure centres - "physically the same way heroin works, by the way".

8 0
3 years ago
Suppose that a public address system emits sound uniformly in all directions and that there are no reflections. The intensity at
dybincka [34]

Answer:

The intensity at a spot 71 m away is 4.02*10^{-5}  Wm^{-2}

Explanation:

Given:

Initial intensity,I_{1}=3.0*10^{-4} Wm^{-2} at a distance, d_{1} = 26 m

Required:

New intensity, I_{2} =? at a distance, d_{2} = 71 m

Using the inverse square law,

I ∝ \frac{1}{d^{2} }

⇒I_{1}I_{1}d_{1}^{2}  =I_{2}d_{2}^{2}

I_{2} =\frac{I_{1} d_{1}^{2}  }{d_{2}^{2}} =\frac{3.0*10^{-4}*26^{2}  }{71^{2} } \\×

I_{2}=4.02*10^{-5}  Wm^{-2}

Thus, the intensity at a spot that is 71 m away is 4.02*10^{-5}  Wm^{-2}

5 0
3 years ago
How does increasing the tension of a spring affect a wave on the spring?
Alla [95]
Increasing the tension of a spring affects a wave on the spring because it increases the frequency. When the tension rises, so does the frequency.
4 0
3 years ago
Read 2 more answers
A car is travelling at 20m/s, accelerates at 4m/s2 . Calculate its velocity after 5s?
IgorLugansk [536]

Answer:

<u>40 m/s</u>

Explanation:

The final velocity of an object that experiences a period of acceleration is given by:

v - vi = A*t

Initial velocity, vi, is = 20m/s

Acceleration, A, is 4m/2^2

Time, t, is 5 seconds

v - vi = A*t

v - 20m/s = (4m/2^2)/(5 sec)

v = (20 m/s) + (20 m/s)

v = 40 m/s

5 0
2 years ago
I WILL GIVE BRAINLIEST HELP DUE TODAY!!!
hjlf
Mechanical digestion begins in the mouth as the food is chewed.(it prepares the food for chemical digestion) Chemical digestion involves breaking down the food into simpler nutrients that can be used by the cells. Chemical digestion begins in the mouth when food mixes with saliva. Saliva contains an enzyme (amylase) that begins the breakdown of carbohydrates.
6 0
3 years ago
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