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kvv77 [185]
2 years ago
10

Greg is boiling water on the stove for some noodles. what object can he safely hold while draining the water from the noodles af

ter they are cooked?
Physics
1 answer:
zmey [24]2 years ago
5 0
In order for Greg to safely drain the water out of the noodles, he should use potholders or any thing that is does not conduct heat or transfer heat. Some pots are also equipped with handles that are made of plastics for safely transferring of its content to another container. 
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A body of mass 25kg, moving at 3 ms per second on a rough horizontal floor brought to rest after sliding through a distance of 2
erastova [34]
You have to solve this by using the equations of motion:
u=3
v=0
s=2.5
a=?
v^2=u^2+2as
0=9+5s
Giving a=-1.8m/s^2

Then using the equation:
F=ma
F is the frictional force as there is no other force acting and its negative as its in the opposite direction to the direction of motion.

-F=25(-1.8)
F=45N

Then use the formula:
F=uR
Where u is the coefficient of friction, R is the normal force and F is the frictional force.

45=u(25g)
45=u(25*10)

Therefore, the coefficient of friction is 0.18

Hope that helps




5 0
3 years ago
Which of the following describes a referee's job?
Serhud [2]

Answer:

C. Supervising the game to make sure teams are playing fairly

5 0
3 years ago
Charlotte throws a paper airplane into the air, and it lands on the ground. Which best explains why this is an example of projec
lubasha [3.4K]

Explanation:

  1. yes it is the force that is subjected by the force of gravity only

4 0
2 years ago
Read 2 more answers
The rope of a swing is 3.10 m long. Calculate the angle from the vertical at which a 76.0 kg man must begin to swing in order to
kakasveta [241]

Answer:

The angle from the vertical is 48.72°

Explanation:

Given :

Length of rope l = 3.10 m

Mass of man m = 76 Kg

Mass of car M = 1520 Kg

Velocity of car v = 1.01 \frac{m}{s}

According to conservation law,

Potential energy of man is converted to kinetic energy of car moving,

   \frac{1}{2} M v^{2} = mgh

We calculate height,

   h = \frac{M v^{2} }{2mg}

   h = \frac{1520(1.01)^{2} }{2\times 75 \times 9.8}                      ( ∵ g = 9.8 \frac{m}{s^{2} } )

   h = 1.05 m

This is the distance of the rope at the bottom,

So we take difference of it.

⇒ 3.10 - 1.05 = 2.05

We can calculate angle between them,

\cos \theta = \frac{2.05}{3.10}  = 0.6597

 \theta = 48.72°

Therefore, the angle from the vertical is 48.72°

8 0
3 years ago
Two iron balls of different mass are heated to 100°C and dropped in water. If the same amount of heat is lost by the two balls t
luda_lava [24]
The correct answer for this question is this one:"D) The heavier ball will have a higher temperature because the change of temperature is inversely proportional to mass."<span>
</span>Hope this helps answer your question and have a nice day ahead.
3 0
3 years ago
Read 2 more answers
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