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Anna [14]
3 years ago
11

Kate walks up to an automated teller machine and pushes a button. The pressure exerted by her finger is transformed into electri

cal energy, which causes a device that uses mechanical energy to push her money out of the machine. This process is called _____.
Physics
1 answer:
lozanna [386]3 years ago
8 0
The answer is Transduction .
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The engine on a fighter airplane can exert a force
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Yes it can because it had lots of force
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Find the velocity v=ds/dt at t=3​
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Firdavs [7]

Initial velocity (u) = 2 m/s

Acceleration (a) = 10 m/s^2

Time taken (t) = 4 s

Let the final velocity be v.

By using the equation,

v = u + at, we get

or, v = 2 + 10 × 4

or, v = 2 + 40

or, v = 42

The final velocity is 42 m/s.

5 0
2 years ago
Read 2 more answers
A person holding a lunch bag is moving upward in a hot air balloon at a constant speed of 7.3 m/s . When the balloon is 24 m abo
Kitty [74]

Explanation:

Given that,

Initial speed of the bag, u = 7.3 m/s

Height above ground, s = 24 m

We need to find the speed of the bag just before it reaches the ground. It can be calculated using third equation of motion as :

v^2=u^2+2as

v^2=(7.3)^2+2\times 9.8\times 24  

v=\sqrt{523.69}

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So, the speed of the bag just before it reaches the ground is 22.38 m/s. Hence, this is the required solution.

8 0
3 years ago
If you wish to warm 100 kg of water by 20°C for your bath, how much heat is required? (Give your answer in calories and joules.)
taurus [48]
Q = mcθ

Where m = mass of water in kg.
c = specific heat capacity in kJ/kg⁰C, c for water = 4200 kJ/kg⁰C
θ = temperature rise in ⁰C

Q = 100*4200* 20    Note here the temperature rise is 20 ⁰C
Q = 8 400 000 J

In calories,  4.2 J = 1 Calorie
=  8 400 000 / 4.2   = 200 000

Q = 200 000 Calories
4 0
3 years ago
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