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Arada [10]
2 years ago
10

What is the answer for ×^+2×+ with solustion​

Physics
1 answer:
drek231 [11]2 years ago
4 0
There’s something wrong with this equation!!! Verify the equation!!!
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Why polarization does not occur in dry cell?​
Arisa [49]

Answer:

Manganese oxide prevents polarisation in dry cells. - Polarization is a defect that occurs in simple electric cells due to the accumulation of hydrogen gas around the positive electrode. ... - MnO2 reacts with H2 and forms water as byproduct, so depolarization doesn't occur.

7 0
3 years ago
What is the kinetic energy of a 0.25kg ball rolling at a speed of 2.5m/s
Lisa [10]

Answer:

Explanation:

Kinetic Energy formula:

KE = \frac{1}{2}mv²

m=mass

v=speed

Given:

m=0.25kg

v=2.5m/s

Plug the values in:

KE = 1/2(0.25kg)(2.5m/s)²

KE = 0.78125 J (Joules)

4 0
2 years ago
Which one of the following does not accurately describe the universal gravitational law? A. Gravitational force is proportional
meriva
<span>A. Gravitational force is proportional to the square of the distance between the centers of both bodies.

FALSE:

Gravitational force is inversely proportional to the square of the distance between the centers of both bodies.

Which you can see from the formula: F = G * [m*M] /(d^2)

As you see in the equation, d^2 is in the denominator so the bigger d^2 (the square of the distance between the centers) of the objects the smaller the gravitational force.

B. The object with the smaller mass does most of the moving because the object with the larger mass has too much inertia to move any noticeable amount.

TRUE:

F = mass * acceleration => acceleration = F / mass => the larger the mass the smaller the acceleration.


C. Gravitational force is proportional to the product of the two masses.

TRUE:

F = G [m*M] / (d^2)

The product of the two masses, m*M, is in the numerator, so F is proportional to this product.

D. Every object in the universe that has mass attracts every other object in the universe that has mass.

TRUE: that is a Universal Law discovered by Sir Isaac Newton.
</span>
6 0
3 years ago
Read 2 more answers
A helicopter flying horizontally at a height H with a speed v0needs to drop a supply capsule to a point P . Assume the capsule h
irinina [24]
L = V0 x t
L = V0 x (2H/g)^1/2
7 0
2 years ago
Un semáforo de 80N cuelga del punto medio de un cable de 30m tendido entre 2 postes. Halle la tensión en cada segmento del cable
olganol [36]

Answer:

T1 = T2 = 602.33 N

Explanation:

I attached an image of the forces diagram below.

The x component of the forces for this cases is:

\Sigma F_x=T_1cos\theta-T_2cos\theta=0\\\\T_1cos\theta=T_2cos\theta\\\\T_1=T_2

And the y components:

\Sigma F_y=T_1sin\theta+T_2sin\theta-W=0\\\\T_1=T_2=T\\\\\Sigma F_y=2Tsin\theta=W\\\\T=\frac{W}{2sin\theta}

The angle is calculated by using the information about the length of the cable and the vertical distance of the traffic light:

\theta=tan^{-1}(\frac{1}{15})=3.81\°

Thus, you obtain:

T=\frac{80N}{2(sin3.81\°)}=601.33N

hence, the tension in both segments of the cable is 602.33 N

3 0
3 years ago
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