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3 years ago

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When you ride a roller coaster that makes sharp turns ,you feel yourself being pushed to one side . Use Newton's first law of mo

tion to explain this phenomenon

1 answer:

arlik [135]3 years ago

6 0

Inertia is the resistance of any physical object to any change in its velocity. When you feel pushed, you feel a change in direction.

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The asteroid belt circles the sun between the orbits of mars and jupiter. one asteroid has a period of 6.2 earth years. what are

mash [69]

<span>TÂ˛ = 4Ď€Â˛rÂł / GM Solved for r : r = [GMTÂ˛ / 4Ď€Â˛]â…“ Where G is the universal gravitational constant, M is the mass of the sun, T is the asteroid's period in seconds, and r is the radius of the orbit. Covert 5.00 years to seconds : 5.00years = 5.00years(365days/year)(24.0hours/day)(6... = 1.58 x 10^8s The radius of the orbit then is : r = [(6.67 x 10^-11Nâ™mÂ˛/kgÂ˛)(1.99 x 10^30kg)(1.58 x 10^8s)Â˛ / 4Ď€Â˛]â…“ = 4.38 x 10^11m The orbital speed can be found from the circular velocity formula : v = âš[GM / r] = âš[(6.67 x 10^-11Nâ™mÂ˛/kgÂ˛)(1.99 x 10^30kg) / 4.38 x 10^11m = 1.74 x 10^4m/s</span>

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4 years ago

Soil is best described as _______. A. A pure substance B. A compound C. A mixture D. An element

Likurg_2 [28]

Soil is composed of small pieces of a variety of materials, so it is a heterogeneous mixture. The answer would be C (mixture) :)

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3 years ago

Read 2 more answers

According to Coulomb’s Law which of the following statements are correct? Select all that apply.

lana [24]

The correct options are:
<span>1) The force between two charged objects increases as the charge of either one of the objects is increased.
4) The force between two charged objects increases as the objects are placed closer together.

In fact, the electrostatic force is given by Coulomb's law:
</span> $F=k \frac{q_1 q_2}{r^2}$
<span>where k is the Coulomb's constant, q1 and q2 are the two charges, r is the separation between the two charges. As we can see from the equation, if one of the charges (q1 or q2) is increased, than the force increases as well (so statement 1) is correct), and if the two objects are placed closer together (r is decreased), the force F increases as well (so statement 4 is correct as well)</span>

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4 years ago

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A bicyclist starts from rest and accelerates at a rate of 2.3 m/s^2 until it reaches a speed of 23 m/s. It then slows down at a

Rama09 [41]

Answer:

33 seconds.

Explanation:

The equation for speed with constant acceleration at time t its:

$V(t) \ = \ V_0 \ + \ a \ t$

where $V_0$ is the initial speed, and a its the acceleration.

<h3>First half of the problem</h3>

Starting at rest, the initial speed will be zero, so

$V_0 = 0$

the final speed is

$V(t_{f1}) = 23 \frac{m}{s}$

and the acceleration is

$a = 2.3 \frac{m}{s^2}$ .

Taking all this together, we got

$V(t_{f1}) = 23 \frac{m}{s} = 0 + 2.3 \ \frac{m}{s^2} t_{f1}$

$23 \frac{m}{s} = 2.3 \ \frac{m}{s^2} t_{f1}$

$\frac{23 \frac{m}{s}}{2.3 \ \frac{m}{s^2}} = t_{f1}$

$10 s = t_{f1}$

So, for the first half of the problem we got a time of 10 seconds.

<h3>Second half of the problem</h3>

Now, the initial speed will be

$V_0 = 23 \frac{m}{s}$ ,

the acceleration

$a=-1.0 \frac{m}{s^2}$ ,

with a minus sign cause its slowing down, the final speed will be

$V(t_{f2}) = 0$

Taking all together:

$V(t_{f2}) = 0 = 23 \frac{m}{s} - 1.0 \frac{m}{s^2} t_{f2}$

$23 \frac{m}{s} = 1.0 \frac{m}{s^2} t_{f2}$

$\frac{23 \frac{m}{s}}{1.0 \frac{m}{s^2}} = t_{f2}$

$23 s = t_{f2}$

So, for the first half of the problem we got a time of 23 seconds.

<h3>Total time</h3>

$t_total = t_{f1} + t_{f2} = 33 \ s$

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3 years ago

Ordinary ocean waves are created by the interaction of the ____ and ____.

dmitriy555 [2]

Wind and amplitude creates the waves in an ordinary ocean

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3 years ago