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3 years ago

What is the mass of a crane that has a weight of 697,005.40N?

Physics

1 answer:

igomit [66]3 years ago

6 0

Explanation:

hope this helps you out if not im sorry

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Plz help me out Brainliest

Mrrafil [7]

Answer:

1.a

2.a

3.d

Explanation:

3 0

4 years ago

Two parallel plates of equal area carry equal and opposite charge Q0. The potential difference between the two plates is measure

jonny [76]

Answer:

Q₁ > Qo

C₁ > Co

Explanation:

We know that

$C_o=\dfrac{\varepsilon _oA}{d}$

Lets take relative permitivity of green plate =k

So new capacitance value

$C_1=k\dfrac{\varepsilon _oA}{d}$

From above two expression we can say that

C₁ = kCo

k > 1

So we can say that

C₁ > Co

We also know that

Co = Qo V

C₁ = Q₁ V

From above we can say that

Co/C₁ = Qo/Q₁ ( C₁ > Co ⇒Co/C₁ <1)

Co/C₁ <1

So we can say that

Qo/Q₁ < 1

Q₁ > Qo

3 0

3 years ago

What is the difference between speed and velocity?

Wittaler [7]

It’s C) because we know that velocity is a vector quantity with direction and speed is only quantity. For example, velocity could be 5 m/s to the east but speed would only be 5 m/s

7 0

3 years ago

Suddenly a worker picks up the bag of gravel. Use energy conservation to find the speed of the bucket after it has descended 2.3

fiasKO [112]

Explanation:

A worker picks up the bag of gravel. We need to find the speed of the bucket after it has descended 2.30 m from rest. It is case of conservation of energy. So,

$\dfrac{1}{2}mv^2=mgh\\\\v=\sqrt{2gh}$

h = 2.3 m

$v=\sqrt{2\times 9.8\times 2.3} \\\\v=6.71\ m/s$

So, the speed of the bucket after it has descended 2.30 m from rest is 6.71 m/s.

8 0

3 years ago

If A vector = i^-j^+k^ then unit vector in the direction of A vector

Novosadov [1.4K]

If A = i - j + k, then the magnitude of A is

||A|| = √(1² + (-1)² + 1²) = √3

Then the unit vector in the direction of A is 1/||A|| multiplied by A :

u = A/||A|| = (i - j + k)/√3

(choice D)

6 0

3 years ago