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V125BC [204]
3 years ago
13

Any ideas for the science fair? I am a 7th grader but looking for a first-place type of project.Thanks!

Physics
1 answer:
mihalych1998 [28]3 years ago
7 0
U can do what is the strongest paper towel
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An unbanked (flat) curve of radius 150 m is rated for a maximum speed of 32.5 m/s. At what maximum speed, in m/s, should a flat
Rasek [7]

Answer:

The maximum speed is 21.39 m/s.

Explanation:

Given;

radius of the flat curve, r₁ = 150 m

maximum speed, v_{max} = 32.5 m/s

The maximum acceleration on the unbanked curve is calculated as;

a_c_{max} = \frac{V_{max}^2}{r} \\\\a_c_{max} = \frac{32.5^2}{150} \\\\a_c_{max} = 7.04 \ m/s^2

the radius of the second flat curve, r₂ = 65.0 m

the maximum speed this unbanked curve should be rated is calculated as;

a_c_{max} = \frac{V_{max}^2}{r_2} \\\\V_{max}^2 = a_c_{max}  \ \times \ r_2\\\\V_{max} = \sqrt{a_c_{max}  \ \times \ r_2} \\\\V_{max} =\sqrt{7.04 \ \times \ 65} \\\\V_{max} = 21.39 \ m/s

Therefore, the maximum speed is 21.39 m/s.

3 0
3 years ago
Assume the objects listed below have the same velocity. Which object has the most kinetic energy? a bus a car a plane a bicycle
DaniilM [7]

A sample of water is taken and kept in a beaker in a freezer at a constant temperature of 0°C. If the system is at dynamic equilibrium, which of these statements is true?  


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If someone throws a 3 gram fry accelerating at 5 meter/second2, what is the fry’s force?
marshall27 [118]

The net force on the fry is 0.015 N.

Explanation:

We can solve this problem by using Newton's second law of motion, which states that:

F=ma

where

F is the net force acting on an object

m is the mass of the object

a is its acceleration

In this problem, we have a fry with mass

m = 3 g = 0.003 kg

And its acceleration is

a=5 m/s^2

Therefore, the net force acting on the fry is

F=ma=(0.003)(5)=0.015 N

Learn more about Newton's second law of motion:

brainly.com/question/3820012

#LearnwithBrainly

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3 years ago
Rewrite the equation d = 1/2gt2 solving for g.
anzhelika [568]

Answer:

g= \frac{2d}{t^{2} }

Explanation:

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What is the relationship between wavelength and amplitude? Best answer gets brainliest!
RoseWind [281]

Answer:

wavelength refers to the length of a wave from one peak to the next.the amplitude of a wave Is measured from the peak to the trough

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