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Gwar [14]
3 years ago
6

What is the length of a simple pendulum with a period of 2.0 s?

Physics
1 answer:
Mariana [72]3 years ago
7 0
 we know 

T=2.pie sqr root(l/g)

l= (sqrof 7/22)*9.8

L= .99 or approx 1m

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Substance X is placed in a container with substance Y.
balandron [24]

Answer:

Substance X will rise due to convection.

Explanation:

4 0
3 years ago
What minimum banking angle is required for an olympic bobsled to negotiate a 100-m radius turn at 35 m/s without skidding? (igno
Leviafan [203]
<span>51 degrees. Since we're ignoring friction, we have to have a banking angle such that the normal force is exactly perpendicular to the banked curve. Since this problem says "ignore friction", if the bank angle is too shallow, the bobsled would slide outwards if the banking angle is too shallow and would fall inwards if the banking angle is too steep. So we have to exactly match the calculated centripetal acceleration. The equation for centripetal acceleration is: F = mv^2/r I'll assume a mass of 1 kg to keep the math simple. Any mass could be used and the direction vectors would be the same except their magnitude would differ. So F = 1 kg * (35 m/s)^2/100 m F = 1225 kg*m^2/s^2 / 100 m F = 12.25 kg*m/s^2 The local gravitational acceleration is 9.8 m/s^2, so the sum of those vectors will have a length of sqrt(12.25^2 + 9.8^2) and an angle of atan(9.8/12.25) below the horizon. The magnitude of the vector doesn't matter, merely the angle which is: atan(9.8/12.25) = atan(0.8) = 38.65980825 degrees. The banking angle needs to be perpendicular to the force vectors. So 90 - 38.65980825 = 51.34019175 degrees. Rounding to 2 significant figures gives a bank angle of 51 degrees.</span>
5 0
3 years ago
A doctor uses an instrument(s) that emits light and allows the doctor to view the inside of a patient’s intestine. What is the d
PSYCHO15rus [73]
The doctor is using fiber optics.
5 0
3 years ago
Read 2 more answers
What does it mean when something says Expert Verified?<br><br> I am Marking brainliest!
alisha [4.7K]

Answer:

it means an expert verified the answer so its nearly always true

Explanation:

8 0
2 years ago
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Traveling at an average rateaverage rate of between 50 and 60 miles per hour for 4 to 7 hours select the best estimate for the d
borishaifa [10]

Answer:

best close estimate distance is 315 miles

Explanation:

given data

speed v1 = 50 miles per hour

speed v2 = 60 miles  per hour

time t1 = 4 hr

time t2 = 7 hr

to find out

best estimate for the distance traveled

solution

we know lower end distance

distance = v1 × t1

distance = 50 × 4 = 200 miles

and

upper end distance

distance = v2 × t2

distance = 60 × 7 = 420 miles

so middle value distance is

v = 55 miles per hour and t = 5.5 hours

distance = v × t  

distance = 55 × 5.5

distance = 302.5 miles

so best close estimate distance is 315 miles

3 0
3 years ago
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