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3 years ago

Which event happens FIRST in the presidential election process?

Physics

2 answers:

spayn [35]3 years ago

4 0

Answer is definitely C

marissa [1.9K]3 years ago

3 0

C i’m pretty sure cuz the rest of them happen after

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Striking a fixed object at 60 MPH is the same as falling from a _____ story building:

yulyashka [42]

speed of the striking object is given as

$v = 60 mph$

now this speed in SI units given as

$v = 60 \times \frac{1609 m}{3600 s}$

$v = 26.82 m/s$

So here we can use kinematic now to find the height from where it is dropped

so here we will have

$v_f^2 - v_i^2 = 2 a d$

now we have

$v_f = 26.82 m/s$

$v_i = 0$

$a = 9.81 m/s^2$

now from above equation

$26.82^2 - 0 = 2(9.81)d$

$d = 36.67 m$

now we know that average height of 1 story building is 3 meter

so approx total number of stories in the building will be

$N = \frac{36.67}{3} = 12 story$

6 0

3 years ago

Read 2 more answers

Un resorte se monta horizontalmente con su extremo izquierdo fijo. Conectando una balanza de

zavuch27 [327]

Translation of important question part (Google translation used)

Force of 6N causes a displacement of 0.03m. remove the balance and connect a body 0.5 kg to the end, pull it to move it 0.02 m, release it and see how it oscillates.

(a)Determine the spring constant.

(b)Calculate angular velocity, frequency, and oscillation period

Answer:

(a)K=200 N/m

(b) w= 20 rad/s f=3.2 Hz T=0.3125 s

Explanation:

(a)

From Hooke's law, we deduce that F=kx where F is applied force, k is spring constant and x is extension of the spring. Making k the subject of the formula then k=F/x and substituting F with 6 N and x with 0.03 m then k=6/0.03=200 N/m

(b)

Angular velocity, w is given by $w= \sqrt{\frac {k}{m}}$ where m is the mass and k is spring constant calculated in part a above. Substituting mass with 0.5 kg and k with 200 N/m then

$w= \sqrt{\frac {200}{0.5}}=20 rad/s$

We know that frequency, f is given by $f=\frac {w}{2\pi}$ and substituting 20 rad/s for w then

$f=\frac {20}{2\pi}=3.1830988618379067153776752674502872406891\approx 3.2 Hz$

Finally, oscillation period, T is usually the reciprocal of frequency hence T=1/f and substituting f with 3.2 Hz then T=1/3.2=0.3125 s

7 0

3 years ago

Georgia is jogging with a velocity of 4 m/s when she accelerates at 2 m/s2 for 3 seconds. How fast is Georgia running now?

professor190 [17]

Georgia is moving by uniformly accelerated motion, with initial velocity
$v_0 =4 m/s$
and with constant acceleration of
$a=2 m/s^2$
so her velocity at time t is given by
$v(t) = v_0 + at = 4 m/s + (2 m/s^2)(3 s)= 10 m/s$
So now Georgia is running at 10 m/s.

7 0

4 years ago

Explain why atmospheric pressure changes as atmospheric depth changes

Pavel [41]

The force of the collisions creates pressure on the container. ... Explain why atmospheric pressure changes as depth changes. Atmospheric pressure increases as depth increases because at lower levels of the atmosphere, there is more air above that is being pulled down by gravitational force.

7 0

3 years ago

How can the rate of the reaction be increased?

RSB [31]

The rate of a reaction increases if the temperature is increased. The concentration of a dissolved reactant is increased. The pressure of a reacting gas is increased.

5 0

3 years ago

Read 2 more answers