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Virty [35]
2 years ago
6

The tip of the fan blade is 0.61 m from the center of the fan. The fan turns at a constant speed and completes 2 rotation every

1.0s
Physics
1 answer:
Goryan [66]2 years ago
5 0

Answer:

What is the centripetal acceleration of the tip of the fan blade?

6.0 m/s2

48 m/s2

53 m/s2

96 m/s2

Answer is 96

Explanation:

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Tom has built a large slingshot, but it is not working quite right. He thinks he can model the slingshot like an ideal spring wi
Amiraneli [1.4K]

Answer:

8.9

Explanation:

We can start by calculating the initial elastic potential energy of the spring. This is given by:

U=\frac{1}{2}kx^2 (1)

where

k = 35.0 N/m is the initial spring constant

x = 0.375 m is the compression of the spring

Solving the equation,

U=\frac{1}{2}(35.0)(0.375)^2=2.5 J

Later, the professor told the student that he needs an elastic potential energy of

U' = 22.0 J

to achieve his goal. Assuming that the compression of the spring will remain the same, this means that we can calculate the new spring constant that is needed to achieve this energy, by solving eq.(1) for k:

k'=\frac{2U'}{x^2}=\frac{2(22.0)}{0.375^2}=313 N/m

Therefore, Tom needs to increase the spring constant by a factor:

\frac{k'}{k}=\frac{313}{35}=8.9

7 0
2 years ago
A baseball player is running to second base at 5.03 m/s. when he is 4.80 m from the plate he goes into a slide. the coefficient
mr Goodwill [35]
Initial velocity Vi = 5.03m/s 
Distance difference D = 4.80 m  
Kinetic Friction coefficient u = 0.18 
Static Friction coefficient Uf = 3.14 
We know g = 9.81 m/s 
Calculating th edistance at which it is stopped, d = Vi^2 / 2 ug => 
 d = 5.03^2 / 2 x 0.18 x 9.81 => d = 25.3 / 3.53 = 7.167 m
 Calculating the acceleration, a = (Vf^2 - Vi^2) / [2d] => 
 Vf is 0 as it is at max distence, a = 5.03^2 / (2 x 7.167) = 1.765 m/ s^2
 Vf = Square root of Vo^2 + (2aD) = > Square root of [0.00 + 2 x 1.765 x 4.80]
= Square root of [16.944] 
Ss his speed = 4.12 m/s
5 0
2 years ago
Read 2 more answers
In the sum of 54.34 and 45.66, the number of significant figure for the<br>answer is​
Natali5045456 [20]

Answer:

5

Explanation:

54.34+45.66=100.00 (you have to use the .00 because when you add to numbers you keep the number of decimals)

so you get 100.00

all numbers that are not 0 are sig figs so 1 is a sig fig

If a number ends with a 0 after a decimal place that 0 is a sig fig

all numbers between two sig figs are sig figs so that would make all of the numbers sig figs

4 0
2 years ago
The heaviest wild lion ever measured had a mass of 313 kg. Suppose this lion is walking by a lake when it sees an empty boat flo
11Alexandr11 [23.1K]

Answer:

The kinetic energy dissipated is 3286.5 J

Explanation:

K.E before collision = 1/2m1v1^2 = 1/2×313×6^2 = 5634 J

K.E after collision = 1/2(m1+m2)v2^2

From the law of conservation of momentum:

m1+m2 = m1v1/v2 = 313×6/2.5 = 751.2 kg

K.E after collision = 1/2×751.2×2.5^2 = 2347.5 J

K.E dissipated = 5634 J - 2347.5 J = 3286.5 J

3 0
2 years ago
The diagram shows a heater above a thermometer. The thermometer bulb is in the position shown. Which row shows how the heat ener
balu736 [363]

Answer:

The diagram shows a heater above a thermometer. The thermometer bulb is in the position shown. How the heat

5 0
2 years ago
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