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vesna_86 [32]
3 years ago
7

Can someone explain what ice jacking is and how it can cause structures to fail?

Physics
1 answer:
densk [106]3 years ago
8 0

Answer: Rock slope failures can occur due to the presence of water; ice jacking occurs when water between joint or fissure surfaces freezes and expands. This type of failure is progressive, resulting in incremental weakening over time, often requiring several cycles before failure. Ice jacking is one form of rock erosion.

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An airplane is at rest on a runway. It accelerates at 10 m/s2 for 15 seconds. How fast is it now traveling?​
KATRIN_1 [288]

Answer:

150

Explanation:

v = at

v = 10(15)

v = 150 m/s

6 0
4 years ago
What voltage can be applied by a resistor<br><br>190 Ω and 100 A?
Anettt [7]

Answer:

V=IR

V=100×190

=19000 V

4 0
3 years ago
A system consists of N particles that can occupy two energy levels: a nondegenerate ground state and a three-fold degenerate exc
cupoosta [38]

Answer:

Ng = 0.893 N,  Ne = 0.107N

Explanation:

Number of particles in Ground state = Ng

Number of particles in Excited state = Ne

Ne/Ng = e^{(-ΔE)/kt}

Since excited state is 3 fold degenerate

Ne/Ng =3 x e^{(-ΔE)/kt}

ΔE = Energy difference between ground and excited states = 0.25eV

T = 960 K

Constant k = 8.617 x 10^-5 eV/K

Ne/Ng = 3 x e^{-0.25/(8.617x10^-5) x 960}

           = 3 x e^(-3.188645)

           = 3 x 0.0412 = 0.1237 ≅ 0.12

Ne = 0.12 Ng

but Ne + Ng = N, where is N is total number of particles, substituting Ne into equation we get,

Ng(1 + 0.12) = N

Ng = N/1.12 = 0.893N

and Ne = 0.12 x 0.893 N = 0.107 N

3 0
4 years ago
If the magnetic force is 3.5 × 10–2 N, how fast is the charge moving?
Sveta_85 [38]

Answer:

The velocity of charge is 1.1×10⁴

Option(D)

Explanation:

F = q(v×B)

3.5×10-²= (8.4×10-⁴)*(v)*(6.7×10-³)*sin35

v = (3.5)/(8.4×6.7×0.57) × 10⁵

v = 3.5/32.08 × 10⁵

v = 0.109 × 10⁵

v ≈ 1.1 × 10⁴ m/s

6 0
3 years ago
Read 2 more answers
A kid is on a stationary sled, on
gregori [183]

The mass of the kid and the sled is 50.0 kg

Explanation:

The sled starts to move when the force applied becomes larger than the maximum force of static friction, which is given by

F_{max} = \mu_s mg

where

\mu_s is the coefficient of static friction

m is the mass of the kid + the sled

g=9.8 m/s^2 is the acceleration of gravity

Here the sled starts moving when the force applied is 61.2 N, so

F_{max}=61.2 N

And we also know

\mu_s = 0.125

Therefore, we can find the mass of the kid and the sled by re-arranging the equation:

m=\frac{F_{max}}{\mu_s g}=\frac{61.2}{(0.125)(9.8)}=50.0 kg

Learn more about friction:

brainly.com/question/6217246

brainly.com/question/5884009

brainly.com/question/3017271

brainly.com/question/2235246

#LearnwithBrainly

6 0
4 years ago
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