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Ann [662]
3 years ago
5

The first five questions refer to the following problem:

Physics
1 answer:
Kruka [31]3 years ago
8 0

Answer:

<h2>Δd=d2−d1</h2>

Explanation:

<h2>good morning</h2>
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When a 3.0 kg mass is hung from a vertical massless spring, the spring is stretched 40 cm. What is the spring constant of the sp
Dmitry_Shevchenko [17]

Answer:

0.74 N/cm

Explanation:

The following data were obtained from the question:

Mass (m) = 3 Kg

Extention (e) = 40 cm

Spring constant (K) =?

Next, we shall determine the force exerted on the spring.

This can be obtained as follow:

Mass (m) = 3 Kg

Acceleration due to gravity (g) = 9.8 m/s²

Force (F) =?

F = mg

F = 3 × 9.8

F = 29.4 N

Finally, we shall determine the spring constant of the spring. This can be obtained as follow:

Extention (e) = 40 cm

Force (F) = 29.4 N

Spring constant (K) =?

F = Ke

29.4 = K × 40

Divide both side by 40

K = 29.4 / 40

K = 0.74 N/cm

Therefore, the spring constant of the spring is 0.74 N/cm

5 0
2 years ago
Somebody please help I need exuse to not go to pe because I injured my self anybody know what to say
algol13

Answer:

Say you feel like you twisted ur ankle or can move your foot or something in that category

3 0
2 years ago
A solid sphere of mass 4.0 kg and radius 0.12 m starts from rest at the top of a ramp inclined 15°, and rolls to the bottom. The
cluponka [151]

Answer:

v = 4.1 m/s

Explanation:

As per mechanical energy conservation law we can say that initial total gravitational potential energy of the sphere is equal to final kinetic energy of rolling

so we will say

mgh = \frac{1}{2}mv^2 + \frac{1}{2}I\omega^2

now for pure rolling condition we know that

v = R\omega

so we will have

mgh = \frac{1}{2}mv^2 + \frac{1}{2}(\frac{2}{5}mR^2)(\frac{v^2}{R^2})

mgh = \frac{7}{10}mv^2

now we will have

v^2 = \sqrt{\frac{10}{7}gh}

v^2 = \sqrt{\frac{10}{7}(9.8)(1.2)}

v = 4.1 m/s

7 0
3 years ago
How are scientific theories and laws similar?
anzhelika [568]
This the answer <span>Often, a law can be expressed in the form of a single mathematical equation. Laws and theories are similar in that they are both scientific statements that result from a tested hypothesis and are supported by scientific evidence. ... A theory, in contrast, is a less concise statement of observed phenomena. i hope this help </span>
6 0
3 years ago
Read 2 more answers
Atmospheric pressure on the peak of Mt. Everest can be as low as 0.197 atm, which is why
lbvjy [14]

Answer:2,030

Explanation:

40 atm x 10.0 L = 400

400/0.197 atm = 2,030

7 0
3 years ago
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