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3 years ago

Answer these, and tell me HOW you got to the answer.

1 answer:

4 0

Here are the answers :)

$\boxed{\bf{27)~Contrast}}$

$\boxed{\bf{45)~The~edges~of~objects}}$ <span>

</span><span> $\boxed{\bf{67)~Light~comes~from~above}}$

</span> $\boxed{\bf{78)~Eyes~and~mouth}}$

$\boxed{\bf{88)~All~of~the~above}}$

Hope that helps you! :)

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An electric car is being designed to have an average power output of 4,600 W for 2 h before needing to be recharged. (Assume the

MAVERICK [17]

Answer:

a)3312 x 10⁴ J

b)I = 57.5 A

c)9200 W

Explanation:

Given that

P =4600 W

Time t= 2 h = 2 x 3600 s= 7200 s

We know that

1 W = 1 J/s

Energy stored in the battery = P .t

=4600 x 7200 J

=3312 x 10⁴ J

We know that power P given as

P = V .I

V=Voltage ,I =Current

4600 = 80 x I

I = 57.5 A

The energy supplied = 4600 x 2 = 9200 W

7 0

3 years ago

An antelope is being chased across the savannah by a hungry lion. The lion runs at a

Paul [167]

Answer:It can run in the same direction but it increases its speed.

Explanation:

8 0

2 years ago

Read 2 more answers

A sample of oxygen gas occupies a volume of 5.0L at 90kPa pressure. What volume will it occupy at 145kPa?

Burka [1]

Answer:

<h3>The answer is option A</h3>

Explanation:

The new volume can be found by using the formula for Boyle's law which is

$P_1V_1 = P_2V_2$

Since we are finding the new volume

$V_2 = \frac{P_1V_1}{P_2} \\$

From the question we have

$V_2 = \frac{5 \times 90000}{145000} = \frac{450000}{145000} = \frac{450}{145} \\ = 3.103448...$

We have the final answer as

Hope this helps you

7 0

3 years ago

DETERMINE THE LAUNCH ELEVATION AND MAXIMUM RANGE: The test vehicle should obtain a burnout velocity of 7200 m/s at 180 km altitu

fenix001 [56]

Answer:

Flight path angle= 15.12°, maximum range= 5.29× 10*6 km

Explanation:

u= 7200m/s, H= 180km= 180000m

Recall that

Maximum height, H= (u*2sin*2∆)/2g

180000= (7200×7200sin*2∆)/2×9.8

(18000×2×98)/7200×7200= sin*2∆

Sin∆= 0.2609

∆= 15.12°

Maximum range, R= u*2/g

(7200×7200)/9.8

= 5289795.92km

= 5.29× 10*6 km

8 0

3 years ago

A portable DVD player requires six 1.5-volt batteries to operate. If the resistance in the circuit is 7.2 ohms, what is the curr

daser333 [38]

Hello!

A portable DVD player requires six 1.5-volt batteries to operate. If the resistance in the circuit is 7.2 ohms, what is the current?

Data:

We have six 1.5 volt batteries, soon, your tension (V)

V = 1.5 * 6 = 9 Volts

R (resistance) = 7.2 ohms

I (Current intensity) = ? (in Amps)

Solving (Ohm's First Law):

$I = \dfrac{V}{R}$

$I = \dfrac{9}{7.2}$

$\boxed{\boxed{I= 1.25\:A}}\end{array}}\qquad\checkmark$

Answer:

The current is 1.25 amps

_______________________

I Hope this helps, greetings ... Dexteright02! =)

5 0

3 years ago