All categories

3 years ago

Debbie plotted a graph to show how the mass of aluminium rivets affected the distance the cup moved down.

Physics

1 answer:

Elan Coil [88]3 years ago

4 0

Answer:

Explanation:

You might be interested in

What is the source of all magnetism?

ivanzaharov [21]

The answer is electric current

3 0

3 years ago

Thomas edison. what is the invention behind him?

matrenka [14]

The light bulb... i think ...

7 0

3 years ago

A point charge of 4 μС is located at x =-30 cm, and a second point charge of-10 pC is located at x-+4.0 cm. where should a third

aksik [14]

Answer:

it is to be placed at x = 3.1 cm

Explanation:

Electric field due to charge placed at x = -30 cm

so we have

$E_1 = \frac{kq}{x^2}$

$E_1 = \frac{9 \times 10^9(4\times 10^{-12})}{0.30^2}$

$E_1 = 0.4 N/C$ towards left

now electric field due to another charge placed at x = 4 cm

$E_2 = \frac{9 \times 10^9(10\times 10^{-12})}{0.04^2}$

$E_2 = 56.25 N/C$ towards Right

now we need electric field due to 6 pC must be equal to

$E = 56.25 - 0.4$

$E = 55.85 N/C$ towards Left

so we have

$55.85 = \frac{9 \times 10^9(6 \times 10^{-12})}{r^2}$

$r = 0.031 m$

so it is to be placed at x = 3.1 cm

3 0

3 years ago

While camping in Denali National Park in Alaska, a wise camper hangs his pack of food from a rope tied between two trees, to kee

Crank

The tension in each of the ropes is 625 N.

Draw a free body diagram for the bag of food as shown in the attached diagram. Since the bag hangs from the midpoint of the rope, the rope makes equal angles θ with the horizontal. The tensions <em>T</em> in both the ropes are also equal.

Resolve the tension T in the ropes into horizontal and vertical components T cosθ and T sinθ respectively, as shown in the figure. At equilibrium,

$2T sin\theta = 50 N$ ......(1)

Calculate the value of sinθ using the right angled triangles from the diagram.

$sin\theta =\frac{0.06 m}{1.5 m} =0.04$

Substitute the value of sinθ in equation (1) and simplify to obtain T.

$2T sin\theta = 50 N\\ T= \frac{50 N}{2 sin\theta}=\frac{50 N}{2*0.06} = 625 N$

Thus the tension in the rope is 625 N.

4 0

4 years ago

A sign is suspended by two cables and hangs at rest. Indentify the forces ?

Ilia_Sergeevich [38]

The forces that act upon the suspending signage are as follows: (1) weight of the signage. This force is due to the pull of gravity. (2) Tensions (both x and y-components). Since there are 2 cables attached to the signage then, both of this cable will exert tension to the signage, pulling it upward.

4 0

3 years ago