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Tatiana [17]
3 years ago
6

Question 11 of 11

Physics
2 answers:
patriot [66]3 years ago
7 0

Answer:

d

Explanation:

VladimirAG [237]3 years ago
6 0

Answer:

D.

Explanation:

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A sprinter begins from rest and accelerates at the rate of 2 m/s^2 for 200 m.
Elanso [62]

Answer:

a. 28.28

B.14.4

C.14.4

Explanation:

A. v^2=u^ + 2as

v^2=0^2 + 2*2*200

B. v=u+at

t=v-u/a

C. V+u/2

5 0
3 years ago
A hiker begins a trip by first walking 25.0 km southeast from her car. She stops and sets up her tent for the night. On the seco
Sunny_sXe [5.5K]

Answer:

(a)

x_1=17.68km\\y_1=-17.68km\\x_2=20km\\y_2=34.64km

(b) r=41.32km

\alpha =24.23^o

Explanation:

Let us take the north direction to be the positive y-axis and the east to be positive x-axis.

First day:

25.0 km southeast, which implies 45^o south of east. The y-component will be negative and the x-component will be positive.

x_1=25cos45^o=17.68km

y_1=-25sin45^o=-17.68km

Second day:

She starts off at the stopping point of last day. This time, both the y- and x-components are positive.

x_2=40cos60^o=20km

y_2=40sin60^o=34.64km

Therefore, total displacements:

x=x_1+x_2=(17.68+20)km=37.68km

y=y_1+y_2=(-17.68+34.64)km=16.96km

Magnitude of displacements,

r=\sqrt{x^2+y^2}=41.32km

Direction,

\alpha =tan^{-1}(\frac{y}{x})=24.23^o

6 0
4 years ago
Two 8V batteries are set up with four light bulbs in a complex circuit. Light bulb A has a resistance of 4.00 Ω, light bulb B ha
Neko [114]

Answer:

Total resistance : 12.4

Total Current : 0.645

Explanation:

4 0
3 years ago
Which technology is intended to work at a distance of about 5 to 10 centimeters with transmission speeds of 250 Kbps?
Mars2501 [29]

Answer:

NFC Near Field Communication

Explanation:

The Near Field Communication is a communication protocol, for extra short distance with a maximum of 10 centimeters, but usually used in 4 to 5 cm. Its intended to be used in contactless pay systems and in transportation card. Actually has been used to transfer multimedia from cell phones and other devices. The maximum data rate is around 424 kbit/s, with mean in 250 Kbp

5 0
4 years ago
Why are watersheds important to humans?
larisa86 [58]

Answer:

The surface water features and storm water runoff within watershed ultimately drain to other bodies of water.

Explanation:

8 0
4 years ago
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