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MakcuM [25]
3 years ago
11

What class lever is a can opener?

Physics
1 answer:
SCORPION-xisa [38]3 years ago
7 0

Answer:

second class lever

Explanation:

because in bottle opener the load lies between effort and fulcrum

thus answer may help u

You might be interested in
How much work is done if you push a box 150 meters with a force of 1.4 N
ss7ja [257]
The work done to push the box is equal to the product between the force and the distance through which the force is applied:
W=Fd
In our problem, the force is F=1.4 N and the distance covered is d=150 m, so the work done by pushing the box is
W=Fd=(1.4 N)(150 m)=210 J
6 0
4 years ago
A circuit with a 60 V battery, a 7 Ω resistor, a resistor with 0.2 A across it, and another 7 Ω resistor in series. What is the
skelet666 [1.2K]

Answer:

28.6 ohm

Explanation:

there is a 3rd resistor in series. voltage drop across the resistors will be equal to 60v

7*.2+7*.2 +.2x = 60

2.8+.2x = 60

.2x = 57.2

x = 28.6

8 0
2 years ago
ifif it takes 1-minute for 45 c of charge to pass a point in an electric circuit what is the current through the circuit?​
Rudiy27

Answer:

45C in a minute is

45/60 C in a second

.75 C in a second is 3/4 of an ampere.

Explanation:

5 0
3 years ago
(a) How fast must a 3000-kg elephant move to have the same kinetic energy as a 65.0-kg sprinter running at 10.0 m/ s?
Aleksandr-060686 [28]

Answer:

1.4719 m per sec

Explanation:

Hello

Kinetic energy is the energy associated with the movement of objects. Although there are many forms of kinetic energy  

the formula to use is

E=\frac{mv^{2} }{2}

where m is the mass of the object and v the velocity

lets see the kinetic energy of the sprinter running

E=\frac{65 Kg*10(\frac{m}{s} ^)){2} }{2} \\\\E=\frac{65 *100 }{2} \\E=3250 Joules\\\\

Now, the elephant must have the same kinetic energy

E=\frac{m*v_{2} ^{2} }{2} \\\\E*2=m*v_{2} ^{2}\\ \frac{2E}{m} =v_{2} ^{2} \\\sqrt{\frac{2E}{m} } =v_{2}  \\\\\\v_{2} =\sqrt{\frac{2*3250}{3000} }\\ \\v_{2} =1.4719 \frac{m}{s} \\\\

it works only the positive root, so the elephant must to  walk  to 1.4719 m/s to have the same kinetic energy.

Have a great day

8 0
3 years ago
Questions 14 out of 20
KiRa [710]

Answer:

B

Explanation:

4 0
4 years ago
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