3 years ago

Pls fast as you can it is a test pls pls

Physics

1 answer:

bixtya [17]3 years ago

5 0

Answer:

give brainly first then i will

Explanation:

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What type of evidence is needed for a hypothesis to be supported or not supported?

NISA [10]

Answer:

Hypotheses must be testable, and once tested, they can be supported by evidence. If a statement is made that cannot be tested and disproved, then it is not a hypothesis.

8 0

3 years ago

The 2nd largest hailstone every measured fell in Aurora, Nebraska, in 2003. The circumference of that hailstone was 16 inches. U

8_murik_8 [283]

Answer:

1. What was the diameter of the hailstone in inches_5.09_ and in cm___12.92___ and in feet ____0.42___?

2. What was the total volume of the hailstone in cubic inches___68.64___ and cubic feet____0.03____?

3. What was the fall velocity of this hailstone in m/s_____2.584____ and in mph___5.78_____?

Explanation:

1. If the circumference (L) of the stone is 16 inches, then from the following equation

$L = 2\pi R$

$R = \frac{L}{2\pi} = \frac{16}{2\pi} = 2.54 ~inches$

$D = 2R = 5.09 ft$

1 inch = 2.54 cm = 0.08 ft, so 5.09 inches = 12..92 cm = 0.42 ft

2. The total volume is

$V = \frac{4}{3}\pi R^3 = \frac{4}{3}\pi (2.54)^3 = 68.64~in^3\\68.64 ~in^3 = 0.03~ft^3$

3. The fall velocity is V = kd, where k = 20 if d is in cm. Let's calculate the fall velocity in cm.

$V = 20*12.92 = 258.4~cm/s = 2.584~m/s$

2.584 m/s = 5.78 mph

4 0

3 years ago

More questions in the image.

Tamiku [17]

True, they represent the direction of motion

8 0

3 years ago

a vector points -43.0 units along the x-axis, and 11.1 units along the y-axis. find the magnitude of the vector

Sauron [17]

Answer:

the magnitude of the vector is 44,40 units

Explanation:

Using the Pythagoras theorem

$M=\sqrt{(-43^{2} )+(11.1)^{2} } \\\\M= 44,4 units$

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4 years ago

Which example shows energy?

olasank [31]

D because u r using your energy to do all the things

4 0

3 years ago

Read 2 more answers