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KatRina [158]
3 years ago
12

In an exciting game, a baseball player manages to safely slide into second base. The mass of the baseball player is 88.1 kg and

the coefficient of kinetic friction between the ground and the player is 0.50. find the magnitude of the frictional force?
Physics
1 answer:
zlopas [31]3 years ago
7 0

Answer:

f=431.69\ N

Explanation:

Given:

  • mass of the player, m=88.1\ kg
  • coefficient of kinetic friction between the ground and the player, \mu_k=0.5
  • Since the normal reaction force on the player due to its mass will be equal to the weight of the player.

<u>We have the expression of kinetic friction as:</u>

f=\mu_k.N

here:

N = normal reaction force

f=0.5\times (88.1\times 9.8)

f=431.69\ N

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Tall trees collapse in stoms, why?​
Sidana [21]

Answer: <em>One main reason, all three experts agree, is the phenomenon known as “windthrow” which uproots a tree. “The tree trunk acts as a lever and so the force applied to the roots and trunk increases with height,” says Foster. “Taller trees are more susceptible to windthrow.”</em>

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7 0
3 years ago
An experimenter using a gas thermometer found the pressure at the triple point of water (0.01°C) to be 4.80 × 10⁴ Pa and the pre
irakobra [83]

Answer:

T = -282.33^o C

Explanation:

As we know that the relation between temperature and pressure is a linear relation

so we have

P - P_o = \frac{P_1 - P_o}{T_1 - T_o} (T - T_o)

here we know that

P_1 = 6.50 \times 10^4

P_o = 4.80 \times 10^4

T_1 = 100^o C

T_o = 0.01^o C

now we will have

P - 4.80 \times 10^4 = \frac{(6.50 - 4.80)\times 10^4}{100 - 0.01}(T - 0.01)

P = 4.80 \times 10^4 + 170.02(T - 0.01)

now if P = 0

then we will have

0 = 4.80 \times 10^4 + 170.02(T - 0.01)

T = -282.33^o C

7 0
3 years ago
Differentiate metal nonmetal and metalloids on the basis of physical and chemical properties​
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Explanation:

4 0
3 years ago
Two children, Ferdinand and Isabella, are playing with a waterhose on a sunny summer day. Isabella is holding the hose in herhan
sweet [91]

Answer:

84.196%

Explanation:

g = Acceleration due to gravity = 9.81 m/s²

y_0=1\ m

x = 10 m

t = Time taken

v_0 = 3.5 m/s (assumed, as it is not given)

A_0 = \pi 1.5^2

We have the equation

y=y_0+ut+\dfrac{1}{2}gt^2\\\Rightarrow 0=y_0-\dfrac{1}{2}gt^2\\\Rightarrow t=\sqrt{\dfrac{2y_0}{g}}\\\Rightarrow t=\sqrt{\dfrac{2\times 1}{9.81}}\\\Rightarrow t=0.45152\ s

x=x_0+vt\\\Rightarrow 10=0+v0.45152\\\Rightarrow v=\dfrac{10}{0.45152}\\\Rightarrow v=22.14741\ m/s

From continuity equation we have

Av=A_0v_0\\\Rightarrow A=\dfrac{A_0v_0}{v}\\\Rightarrow A=\dfrac{\pi 1.5^2\times 3.5}{22.14741}\\\Rightarrow A=1.11706\ cm^2

Fraction is given by

f=\dfrac{A_0-A}{A_0}\times 100\\\Rightarrow f=\dfrac{\pi 1.5^2-1.11706}{\pi 1.5^2}\times 100\\\Rightarrow f=84.196\ \%

The fraction is 84.196%

4 0
3 years ago
You are using a bucket of water in a science experiment. You conclude that water is a liquid because
Harrizon [31]
Well you could see it's physical properties have the same descriptions corresponding to a liquid. (Sorry if this doesn't help you..)
8 0
4 years ago
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