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3 years ago

Draw a conclusion, based on the solubility curves shown above, of which compound would have the greatest

Physics

1 answer:

Colt1911 [192]3 years ago

3 0

Answer: The answer is D. KNO3

Explanation:

The graph shows that the KN03 going straight up from the temperature sign so you reversed that so that it will make it to 90°C to 30°C

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A 4.0×1010kg asteroid is heading directly toward the center of the earth at a steady 16 km/s. To save the planet, astronauts str

blondinia [14]

Answer:

a. t = 69.4 hr = 2.89 days

b. theta = 91.67*10^-3 degrees

c. deflection_angle = 0.134 degrees

Explanation:

a).

The asteroid impacts the earth in t

t = x/v = (4.0*10^6 km)/(16 km/sec)

t = 2.5 * 10^5 sec

t = 69.4 hr = 2.89 days

b).

tan(theta) = 6400 km/(4.0*10^6 km)

tan(theta) = 1.6*10^-3

theta = arctan(1.6*10^-3)

theta = 1.6*10^-3 radians (for small angles, tan(theta) ~= theta)

theta = 91.67*10^-3 degrees

c).

v_minimum = 6400 km/(2.5 * 10^5 sec)

v_minimum = 25.6 m/s

Using F = m*a, we can calculate the acceleration of the asteroid due to the rocket's thrust:

5.0*10^9 N = 4.0*10^10 kg * a

a = (5.0*10^9 N)/(4.0*10^10 kg)

a = 0.125 m/s^2

The transverse velocity after 300 seconds of this acceleration is:

v_transverse = a*t = 0.125 m/s^2 * 300 s

v_transverse = 37.5 m/s = 37.5*10^-3 km/s

tan(deflection_angle) = v_transverse/(20 km/s)

tan(deflection_angle) = (37.5*10^-3 km/s)/(16 km/s) = 2.34^-3

deflection_angle = arctan(2.34*10^-3)

deflection_angle = 2.34*10^-3 radians = 0.134 degrees

v_transverse/(16 km/s) > (6400km)/(5.0*10^6 km)

(note that the right hand side if this inequality is tan(theta) calculated above)

v_transverse > 23.704 m/

8 0

3 years ago

What process primes a molecule to change in a way that increases its activity, produces motion, or does work

kirza4 [7]

Answer:

cellular respiration.

explanation: cellular respiration, the process by which organisms combine oxygen with foodstuff molecules, diverting the chemical energy in these substances into life-sustaining activities and discarding, as waste products, carbon dioxide and water.

4 0

2 years ago

Two men are pushing a box in the same direction, to the right along the floor. the first man is pushing with a force of 20n. the

SIZIF [17.4K]

20N + 10N - 5N = 25N. That's the net force.

6 0

3 years ago

Two power lines, each 290 m in length, run parallel to each other with a separation of 23 cm. If the lines carry parallel curren

GREYUIT [131]

To solve this problem we will apply the concepts related to the Magnetic Force, which is defined as the product between the currents multiplied by the length where they are transmitted and inversely proportional to the distance that separates them, considering between them, the costs indicated below . We will simply replace the values and obtain the desired value,

$F = \frac{\mu_0 I_1I_2 l }{2\pi d}$

Here,

$\mu_0$ = Permeability of free space

$I_{1,2}$ = Current at each state

$l$ = Length

$d$ = Distance of separation

Replacing with our values we have that the force is,

$F = \frac{(4\pi *10^{-7})(120)(120)(290)}{2\pi (0.23)}$

$F = 3.63N$

Therefore the magnitude of the force is 3.63N, and if the currents are in same direction then force is attractive, while if the currents are in opposite direction then force is repulsive ( force is same).

3 0

3 years ago

The ocean helps absorb: hydrogen carbon dioxide nitrogen sulfur dioxide

Romashka-Z-Leto [24]

Carbon Dioxide (CO2), this leads to a greenhouse effect.

5 0

3 years ago

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