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IgorLugansk [536]
3 years ago
9

Based on the information in the chart, which of these acids would be the best conductor of electricity?

Physics
1 answer:
Novay_Z [31]3 years ago
8 0

Answer:

sulphuric acid

Explanation:

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You did 200 joules of work lifting a 150-newton backpack. How high did you lift the backpack?
kaheart [24]
We know that:
W=Fs
200J=150N*s
s=200J/150N
s=1,33m
8 0
3 years ago
What spheres are part of the earths system​
Mama L [17]

Answer:

northern and southern sphere

Explanation:

4 0
3 years ago
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Un tubo cilindrico hueco de cobre mide 3 m de longitud tienen un diametro exterior de 4cm y un diametro interior de 2 cm¿cuanto
Irina-Kira [14]

Answer:

 W = 9.93 10² N

Explanation:

To solve this exercise we must use the concept of density

           ρ = m / V

the tabulated density of copper is rho = 8966 kg / m³

let's find the volume of the cylindrical tube

           V = A L

           V = π (R_ext  ² - R_int ²) L

let's calculate

          V = π (4² - 2²) 10⁻⁴  3

          V = 1.13 10⁻²  m³

         m = ρ V

        m = 8966 1.13 10⁻²

        m = 1.01 10² kg

the weight of the tube

        W = mg

         W = 1.01 10² 9.8

         W = 9.93 10² N

4 0
2 years ago
A car is driving away from a crosswalk. The formula d = t 2 + 2 t expresses the car's distance from the crosswalk in feet, d , i
Ede4ka [16]

Answer:

1) No, the car does not travel at constant speed.

2) V = 9 ft/s

3) No, the car does not travel at constant speed.

4) V = 5.9 ft/s

Explanation:

In order to know if the car is traveling at constant speed we need to derive the given formula. That way we get speed as a function of time:

V(t) = 2*t + 2   Since the speed depends on time, the speed is not constant at any time.

For the average speed we evaluate the formula for t=2 and t=5:

d(2) = 8 ft     and      d(5) = 35 ft

V_{2-5}=\frac{d(5)-d(2)}{5-2}=9 ft/s

Again, for the average speed we evaluate the formula for t=1.8 and t=2.1:

d(1.8) = 6.84 ft     and      d(2.1) = 8.61 ft

V_{1.8-2.1}=\frac{d(2.1)-d(1.8)}{2.1-1.8}=5.9 ft/s

4 0
3 years ago
What is the kinetic energy of a baseball with a mass of 0.133 kg and moving at a speed of 28.7m/s
blsea [12.9K]

Answer:

54.7 J

Explanation:

kinetic energy formula

3 0
2 years ago
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