All categories

4 years ago

How was haystack rock created?

Physics

2 answers:

madam [21]4 years ago

6 0

The lava flowed through low-lying valleys and over the smaller Cascade Mountain Range. As it reached the ocean shore, it sank down into the soft sediments, cooling and hardening into thick black basalt.

Hope I Helped

Tamiku [17]4 years ago

3 0

By growing corn...hope this helps

You might be interested in

A study where you try to observe subjects in a natural environment is a(n)

Aleksandr [31]

Answer:

i think it Naturalistic observation

Explanation:

6 0

4 years ago

Predict whether sound will would travel faster in air in summer or in winter?

Arisa [49]

In summer because the air in summer is less dense.

8 0

3 years ago

Professor Frank Nabarro insists that all senior physics majors take his notorious physics aptitude test. The test is so tough th

yulyashka [42]

Answer:

0.5504

Explanation:

We can use Bay's theorem to solve this question

P( No physics career/fail) = P(No Physics career and fail)/P(Fail)

= P( Fail/ No physics career)×P( no physics career)/P( fail)

= $\frac{0.3\times1}{(0.7\times0.35)+(0.3\times1)}$

=0.5504

8 0

3 years ago

Two thousand two hundred frequent business travelers are asked which midwestern city they prefer: Indianapolis, Saint Louis, Chi

drek231 [11]

Frequency Table
City    Frequency
Indianapolis 124
Saint Louis 416
Chicago 1,225
Milwaukee      435

Relative Frequency Table
City     Relative Frequency
Indianapolis 124/2200 = 31/550
Saint Louis 416/2200 = 52/275
Chicago 1,225/2200 = 49/88
Milwaukee      435/2200 = 87/440

5 0

3 years ago

By what factor must we increase the amplitude of vibration of an object at the end of a spring in order to double its maximum sp

strojnjashka [21]

Answer:

$A'=2A$

Explanation:

According to the law of conservation of energy, the total energy of the system can be expresed as the sum of the potential energy and kinetic energy:

$E=U+K=\frac{kA^2}{2}\\E=\frac{kx^2}{2}+\frac{mv^2}{2}=\frac{kA^2}{2}$

When the spring is in its equilibrium position, that is $x=0$ , the object speed its maximum. So, we have:

$\frac{k(0)^2}{2}+\frac{mv_{max}^2}{2}=\frac{kA^2}{2}\\A^2=\frac{mv_{max}^2}{k}\\A=\sqrt{\frac{mv_{max}^2}{k}}$

In order to double its maximum speed, that is $v'{max}=2v_{max}$ . We have:

$A'=\sqrt{\frac{m(v'_{max})^2}{k}}\\A'=\sqrt{\frac{m(2v_{max})^2}{k}}\\A'=\sqrt{\frac{4mv_{max}^2}{k}}\\A'=2\sqrt{\frac{mv_{max}^2}{k}}\\A'=2A$

6 0

3 years ago