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max2010maxim [7]
3 years ago
8

5. The disks, or pads, that exist between bones as gliding joints are made of which substance?

Physics
1 answer:
DerKrebs [107]3 years ago
5 0

Answer:

cartilage

Explanation:

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An electric kettle is rated at 2 kW when connected to a 230 V electrical supply
Oliga [24]

Explanation:

a) P = IV

2000 W = I (230 V)

I = 8.7 A

b) The fuse must be rated for a higher current than the kettle, so use the 13A fuse.

c) Double insulation means there are two layers of insulation, insuring that the wires cannot touch the outer casing of the kettle and protecting the user from electrical shock.

d) V = IR

230 V = (8.7 A) R

R = 26.5 Ω

6 0
3 years ago
How can you increase the torque you are putting on a lever, without exerting any more force?
Mariana [72]

Answer:

See below

Explanation:

Torgue = f * distance    basically ...so if you want to increase torque with same  f   then the distance ( lever arm)  must be increased

4 0
3 years ago
Help me with this???
Vikentia [17]

Yo sup??

Average velocity=total distance covered/total time taken

total distance covered=4 + 8=12 miles

total time taken=6 hours

Therefore

average velocity=12/6

=2 miles/hour

Hope this helps

8 0
3 years ago
Which of the following is the correctly abbreviated SI unit describing the mass of an object
frosja888 [35]
Mass is Kg 
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8 0
3 years ago
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A helicopter (m = 3250 kg) is cruising at a speed of 56.9 m/s atan altitude of 185 m. What is the total mechanical energy of the
taurus [48]

Answer:

The mechanical energy of the helicopter is 1.12\times 10^7\ J.

Explanation:

It is given that,

Mass of the helicopter, m = 3250 kg

Speed of the helicopter, v = 56.9 m/s

Position of the helicopter, h = 185 m

The energy possessed by an object due to its motion is called its kinetic energy. It is given by :

E=\dfrac{1}{2}mv^2

E=\dfrac{1}{2}\times 3250\times (56.9)^2  

E=5.26\times 10^6\ J

The energy possessed by an object due to its position is called its potential energy. It is given by :

E=mgh

E=3250\times 9.8\times 185  

E=5.89\times 10^6\ J

The sum of kinetic and potential energy is called mechanical energy of the system. It is given by :

M=5.26\times 10^6+5.89\times 10^6

M=11.15\times 10^6\ J

or

M=1.12\times 10^7\ J

So, the mechanical energy of the helicopter is 1.12\times 10^7\ J. Hence, this is the required solution.

6 0
3 years ago
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