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4 years ago

I need a correct answer plzzzzzzzzzzzzzzzzzzzz

Physics

1 answer:

olya-2409 [2.1K]4 years ago

4 0

Answer:

option 1

Explanation:

i just used the SOH CAH TOA, and since the given is tan=opposite/adjacent, that should be the answer

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As an object moves, the distance it travels increases with time. Agree Disagree

suter [353]

Answer:

Explanation: it is Agree when the distance travels

7 0

2 years ago

Read 2 more answers

A motorcyclist drove 7 km at 57km/h and then another 7 km at 81 km/h. What was the average speed?

alex41 [277]

Answer:

The average speed of the car is 66.9 km/h

Explanation:

Here distance covered with the speed 57 km/h=7 km 

distance covered with the speed of 81 km/h=7 km

Average speed is equal to the ratio of total distance to the total time.

total distance= 7 + 7= 14 km

$time= \frac{distance}{speed}$

time taken to cover the first 7 km= 7/57 h

time taken to cover the second part of the journey = 7/81 h

average speed = $14/(7/57+7/81)=(14 \times 57 \times 81)/945=66.9 km/h$ 

Shortcut: 

When equal distances are covered with different speeds average speed=2 ab/(a+b) where a and b are the variable speeds in the phases. 

7 0

3 years ago

The wavelength and energy of a wave are inversely proportional. Based on this, which wave listed would have the LOWEST energy.

spayn [35]

D because it has the lowest wavelength, meaning the wave is the longest. Its crest are more spaced out creating lower energy. The smaller distance between the crests equals the higher the sound. Creating higher energy.

I am 95% sure this is right. Very sorry if it isn't.
Hope it helps. ;3

5 0

4 years ago

Read 2 more answers

Why was Thompson's Plum pudding model a significant departure from previous models?

PSYCHO15rus [73]

Answer:

Thomson's cathode-ray tube experiments led him to develop the plum-pudding model, which stated that each atom had positively charged particles spread throughout its negatively charged matter. Reword the statement so it is true. ... More alpha particles were deflected than he expected.

Explanation:

Well.. I hope it helps you..

Just correct me if I'm wrong..

5 0

3 years ago

What is its speed after 3. 83 as if it accelerates uniformly at −3. 04 m/s 2 ? answer in units of m/s.

weeeeeb [17]

The velocity equation is $v_{final} =v_{initial} +at\\$

Known facts:

t = 3.83s
a= -3.04
intial velocity = 0

Plug into equation known quantities:

$v_{final} = (-3.04) * 3.83 = -11.6432m/s$

Thus the final velocity is -11.6432m/s

Hope that helps!

6 0

3 years ago