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3 years ago

The surface temperature of venus is so high because

1 answer:

3 0

In short, it is due to its atmosphere and the greenhouse effect. It's atmosphere is made mostly of carbon dioxide and is much thicker than earth's atmosphere. This causes it to trap a large amount of heat from the sun.

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.89m/s A vehicle that starts to move from the rest gets an acceleration of 5m/s² within 2 seconds. Calculate the velocity and di

GuDViN [60]

<u>Explanation:</u>

s = ? u = 0m/s v = ? a = 5m/s² t = 2s

v = u + at

= 0 + (5 x 2)

= 10 m/s

s = ut + 1/2 at²

= (0)(2) + x $\frac{1}{2}$ x 5 x 2²

= 10 m

Hope this helps!

5 0

2 years ago

The primary coil of a transformer has N1 = 275 turns, and its secondary coil has N2 = 2,200 turns. If the input voltage across t

DedPeter [7]

Answer:

Secondary voltage of transformer is 905.23 volt

Explanation:

It is given number of turns in primary of transformer $N_1=275$

Number of turns in secondary $N_2=2200$

Input voltage equation of the transformer

$\Delta v=160sin\omega t$

Here $v_{max}=160volt$

$v_{rms}=\frac{160}{\sqrt{2}}=113.15volt$

For transformer we know that

$\frac{V_1}{V_2}=\frac{N_1}{N_2}$

$\frac{113.15}{V_2}=\frac{275}{2200}$

$V_2=905.23Volt$

Therefore secondary voltage of transformer is 905.23 volt

6 0

3 years ago

As part of an interview for a summer job with the Coast Guard, you are asked to help determine the search area for two sunken sh

MrMuchimi

Answer: $37^{\circ}$ North of west

Explanation:

Given

40,000-ton luxury line traveling 20 knots towards west and

60,000 ton freighter traveling towards North with 10 knots

suppose v is the common velocity after collision

conserving momentum in west direction

$20\times 40,000=(20,000+60,000)v\cos \theta$

suppose the final velocity makes \theta angle with x axis

$v\cos \theta =10----1$

Conserving Momentum in North direction

$10\times 60,000=80,000\times v\sin\theta$

$v\sin \theta =\frac{15}{2}----2$

divide 1 and 2

$\tan \theta =\frac{3}{4}$

$\theta =37^{\circ}$

so search in the area $37^{\circ}$ North of west to find the ship

3 0

3 years ago

An 850-lb force is applied to a 0.15-in. diameter nickel wire having a yield strength of 45,000 psi and a tensile strength of 55

Sindrei [870]

Answer:

a)Yes will deform plastically

b) Will NOT experience necking

Explanation:

Given:

- Applied Force F = 850 lb

- Diameter of wire D = 0.15 in

- Yield Strength Y=45,000 psi

- Ultimate Tensile strength U = 55,000 psi

Find:

a) Whether there will be plastic deformation

b) Whether there will be necking.

Solution:

Assuming a constant Force F, the stress in the wire will be:

stress = F / Area

Area = pi*D^2 / 4

Area = pi*0.15^2 / 4 = 0.0176715 in^2

stress = 850 / 0.0176715

stress = 48,100.16 psi

Yield Strength < Applied stress > Ultimate Tensile strength

45,000 < 48,100 < 55,000

Hence, stress applied is greater than Yield strength beyond which the wire will deform plasticly but insufficient enough to reach UTS responsible for the necking to initiate. Hence, wire deforms plastically but does not experience necking.

6 0

3 years ago

okay i was trying to see if yall know this okay a wave is a repeating disturbance of movement that transfers .........blank

Lemur [1.5K]

Energy through space or matter.

8 0

3 years ago