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Morgarella [4.7K]
3 years ago
14

With a pulley system, a force of only 50 lb can lift a 500-lb weight. What is the mechanical advantage if this system is 100% ef

ficient
Physics
1 answer:
saw5 [17]3 years ago
3 0

Answer:

the mechanical advantage is 10

Explanation:

The computation of the mechanical advantage is as follows:

Mechanical advantage is

= Load ÷ Effort

where,

The Loan is equivalent to the weight i.e. 500 lb

And, the effort is equivalent to the force applied  i.e. 50lb

So, the mechanical advantage is

= 500 ÷ 50

= 10

Hence, the mechanical advantage is 10

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Calculate the energy absorbed when 13 kg of liquid water raises from 18°C to 100°C and then boils at 100°C.
Cloud [144]

Answer:

the energy absorbed is 4.477 x 10⁶ J

Explanation:

mass of the liquid, m = 13 kg

initial temperature of the liquid, t₁ = 18 ⁰C

final temperature of the liquid, t₂ = 100 ⁰C

specific heat capacity of water, c = 4,200 J/kg⁰C

The energy absorbed is calculated as;

H = mcΔt

H = mc(t₂ - t₁)

H = 13 x 4,200(100 - 18)

H = 4.477 x 10⁶ J

Therefore, the energy absorbed is 4.477 x 10⁶ J

5 0
3 years ago
Harry and Hagrid needed to get money out of Gringotts bank. The bank cart was accelerating at a rate of 4 m/s2 and it had a mass
Nutka1998 [239]

a = acceleration of the bank cart = 4 m/s²

m = mass of the bank cart = 8000 kg

F = net force on the cart

According to newton's second law , Net force is the product of mass of the object and the acceleration of the object.

Net force = mass x net acceleration

hence Net force acting on the cart is given as

F = ma

F = 8000 x 4

F = 32000 N

hence the net force acting on the cart comes out to be 32000 N


8 0
3 years ago
the Space Program has benefitted people in everyday life. Describe two ways in which people can benefit
ycow [4]
So we can know what is in space maybe weird or interesting stuff 

8 0
3 years ago
What braking technique slows the vehicle as quickly as possible without locking brakes or losing traction
-Dominant- [34]

Answer: Cadence braking or Stutter braking is the braking technique slows the vehicle as quickly as possible without locking brakes or losing traction.

Explanation: To find the answer, we need to know more about the Cadence breaking.

<h3>What is cadence braking?</h3>
  • It's a braking technique, that includes, pumping the brake pedal and which used to allow a vehicle to steer as well as brake on a slippery surface.
  • It is used in the case of an emergency or sudden braking is needed.
  • In this technique, traction is limited to reduce the effect of skidding from road wheels locking up under braking.

Thus, from the above given data, we can conclude that, Cadence braking or Stutter braking is the braking technique slows the vehicle as quickly as possible without locking brakes or losing traction.

Learn more about the cadence braking here:

brainly.com/question/28020196

#SPJ4

8 0
2 years ago
Which acid is naturally found in foods and can be safe to eat?
IRISSAK [1]

Answer:

Citric

Explanation:

Citric and acetic acids are naturally found in foods and can be safe to eat.

7 0
3 years ago
Read 2 more answers
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