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3 years ago

O A ring made up of equal semicircular section of cast inn and castutool with

Physics

1 answer:

irina1246 [14]3 years ago

5 0

Answer:

hi weed DM weed TV TV DM

Explanation:

so en signal eddi

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Increasing the what of two objects will cause the gravitational force between the objects to decrease

Inga [223]

By increasing the distance between the two objects.

4 0

4 years ago

Convert gravitational potential energy to kinetic energy.

Digiron [165]

Answer:

1.7 J

Explanation:

The energy carried by a single photon is given by

E=hf

where h is the Planck's constant and f is the frequency of the photon.

The photon of our exercise has a frequency of f=1.7 \cdot 10^{17} Hz, therefore its energy is

E=hf=(6.63 \cdot 10^{-34}Js)(1.7 \cdot 10^{17} Hz)=1.1 \cdot 10^{-16} J

4 0

3 years ago

Why is a pencil bent when bent in water

wel

Answer:

Refraction

Explanation:

A pencil bends when it enters the water media due to the phenomenon of refraction.

Refraction is one of the properties of waves.
Refraction of light occurs which it crosses from a region having different density values.
Water is denser than air.
As light moves from air to wave it becomes refracted

5 0

3 years ago

Apples are stored in a container (width = length = 3.5 ft) that is filled to a depth of 2.75 feet. If the unit density of an app

Agata [3.3K]

Answer:

The mass of the apples in the box are 1145.95 lb.

Explanation:

Given that,

Width = 3.5 ft

length = 3.5 ft

Depth = 2.75 feet

Density = 49.3 lb/ft³

We need to calculate the volume

Using formula of volume

$V=l\times h\times b$

Put the value

$V=3.5\times3.5\times2.75$

$V=33.6875\ ft^3$

We need to calculate the mass

Using formula of density

$\rho=\dfraxc{m}{V}$

$m=\rho\timesV$

Put the value into the formula

$m=49.3\times33.6875$

$m=1660.79\ lb$

But porosity is 31 % so apples is 69% mass of total container.

So, Total mass in pounds is

$M=\dfrac{69}{100}\times1660.79$

$M=1145.95\ lb$

Hence, The mass of the apples in the box are 1145.95 lb.

8 0

3 years ago

Two forces act on an object. The first force has a magnitude of 15.0 N15.0 N and is oriented 58.0°58.0° counterclockwise from th

SIZIF [17.4K]

Answer:

F = 33.12 N

Explanation:

given,

first force = 15 N is oriented at 58.0° counterclockwise

second force = (−19.0 N,18.5 N)

x-component of first force = 15 cos 58.0° = 7.95 N

y-component of second force = 15 sin 58.0° = 12.72 N

second component

now,

F netx = 7.95 - 19 = -11.05 N

F nety = 12.72 + 18.5 = 31.22 N

$F=\sqrt{(-11.05)^2+31.22^2}$

F = 33.12 N

$tan \theta = -\dfrac{31.22}{11.05}$

θ = -70.51°

3 0

4 years ago