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Mariana [72]
2 years ago
14

Frieda stands on a hill with a slope of 62°. If her mass is 49 kg, what is the

Physics
1 answer:
olasank [31]2 years ago
5 0

Answer:

225.67 round to 226 (D)

Explanation:

just submitted on a.(p3*x

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PL-1) A spring that hangs vertically is 25 cm long when no weight is attached to its lower end. Steve adds 250 g of mass to the
Anuta_ua [19.1K]

Answer:

20.42 N/m

Explanation:

From hook's law,

F = ke ......................... Equation 1

Where F = Force applied to the spring., k = spring constant, e = extension.

Make k the subject of the equation,

k = F/e ................. Equation 2

Note: The force on the spring is equal to the weight of the mass hung on it.

F = W = mg.

k = mg/e................ Equation 3

Given: m = 250 g = 0.25 kg, e = 37-25 = 12 cm = 0.12 m.

Constant: g = 9.8 m/s²

Substitute into equation 3

k = (0.25×9.8)/0.12

k = 20.42 N/m.

Hence the spring constant = 20.42 N/m

7 0
3 years ago
Which statement is TRUE? Question 5 options: Waves travel at different speeds through different materials. Wave speed depends on
Sunny_sXe [5.5K]

Answer:

Waves move through different vmaterials

5 0
2 years ago
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Match the following
Fofino [41]

Answer:

1. b

2. d

3. e

4. c

5. a

Explanation:

These are just basic definitions. Let me know if you need further clarification.

7 0
3 years ago
An athlete kicks a soccer ball that starts at rest so that it leaves their foot with a speed of 10m/s from the top o f a rectang
kirza4 [7]

Answer:

a=500m/s^2

Explanation:

We need only to apply the definition of acceleration, which is:

a=\frac{v_f-v_i}{t_f-t_i}

In our case the final velocity is v_f=10m/s, the initial velocity is v_i=0m/s since it departs from rest, the final time is t_f=0.02s and the initial time we are considering is t_i=0s

So for our values we have:

a=\frac{10m/s-0m/s}{0.02s-0s}=500m/s^2

3 0
3 years ago
In one town, there are several natural gas drilling sites. Scientists warn town officials that the health of the people could be
Citrus2011 [14]

Answer:

C. community

Explanation:

Community consists of a local residence, like a town.

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3 years ago
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