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PolarNik [594]
3 years ago
11

Devon places sliced potatoes in a package of aluminum foil. He puts a metal grate over a campfire and sets the package on the gr

ate. He warms his hands over the fire while he waits and watches the hot air carry ashes into the sky. When he removes the foil package, the grate and foil are hot, and the food is cooked.
Which part of this scenario represents conduction?
Physics
2 answers:
sp2606 [1]3 years ago
7 0

when he set the potatoes in the aluminum foil over the campfire because the heat was directly touching them and heating them

Sunny_sXe [5.5K]3 years ago
3 0

Answer:

The food cooks inside the foil

Explanation:

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How to find yield strength of a load vs deflection?
liraira [26]
Σ/ε
σ = F/A
ε = ΔL/L
F = force
A = area
L = lenght
ΔL = |old lenght - new lenght|
6 0
3 years ago
The International Space Station (ISS) orbits Earth at an altitude of 400 km. Using this information, plus the mass and radius of
Thepotemich [5.8K]

Answer:

v = 7671.57 m/s

T = 1.55 hours

Explanation:

mass of Earth, M = 6 x 10^24 kg

Radius of earth, R = 6400 km = 6.4 x 10^6 m

height, h = 400 km

Velocity is given by

v=\sqrt{\frac{GM}{R+h}}

where, G be the universal gravitational constant.

G = 6.657 x 10^-11 Nm^2/kg^2

v=\sqrt{\frac{6.67\times 10^{-11}\times 6\times 10^{24}}{6800\times 10^{3}}}

v = 7671.57 m/s

Let T b the period

T=\frac{2\pi (R+h)}{v}

T=\frac{2\times 3.14(6800\times 1000)}{7671.57}

T = 5566.53 second

T = 1.55 hours

5 0
3 years ago
The Outlaw Run roller coaster in Branson, Missouri, features a track that is inclined at 84 ∘ below the horizontal and that span
harina [27]

Answer:

Explanation:

a)

Ff = μmgcosθ

Ff = 0.28(1600)(9.8)cos(-84)

Ff = 458.9217...

Ff = 460 N

b)  ignoring the curves required at top and bottom which change the friction force significantly, especially at the bottom where centripetal acceleration will greatly increase normal forces and thus friction force.

W = Ffd

W = 458.9217(-49.4/sin(-84)

W = 22,795.6119...

W = 23 kJ

c) same assumptions as part b

The change in potential energy minus the work of friction will be kinetic energy.

KE = PE - W

½mv² = mgh - (μmgcosθ)d

v² = 2(gh - (μgcosθ)(h/sinθ))

v = √(2gh(1 - μcotθ))

v = √(2(9.8)(49.4)(1 - 0.28cot84))

v = 30.6552...

v = 31 m/s

5 0
2 years ago
See the person on the right side of the front car. Six reference points could be used to show that the person is in / is NOT in
Rasek [7]

▪▪▪▪▪▪▪▪▪▪▪▪▪  {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪

1. According to person standing on ground ~

  • The person is in motion

2. According to The car ~

  • The person is not in motion

3. According to the Seat ~

  • The person is not in motion

4. According to another person on ride ~

  • The person is not in motion

5. According to the track ~

  • The person is in motion

6. According to the Sun ~

  • The person is in motion

I hope that's what you were looking for, goodluck for your assignment ~

7 0
2 years ago
Light of wavelength 597 nm falls on a double slit, and the first bright fringe of the interference pattern is seen at an angle o
Kazeer [188]

Answer:

2.2 µm

Explanation:

For constructive interference, the expression is:

d\times sin\theta=m\times \lambda

Where, m = 1, 2, .....

d is the distance between the slits.

Given wavelength = 597 nm

Angle, \theta  = 15.8°

First bright fringe means , m = 1

So,

d\times sin\ 15.8^0=1\times \597\ nm

d\times 0.2723=1\times \597\ nm

d=2192.43481\ nm

Also,

1 nm = 10⁻⁹ m

1 µm = 10⁻⁶ m

So,

1 nm = 10⁻³ nm

Thus,

<u>Distance between slits ≅ 2.2 µm</u>

8 0
3 years ago
Read 2 more answers
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