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Bumek [7]
3 years ago
5

How does a single fixed pulley, like the one seen here, help you do work?

Physics
2 answers:
AlexFokin [52]3 years ago
3 0
The correct answer is A.
grigory [225]3 years ago
3 0

Answer:

Explanation:changes the way of the force a

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A jet plane is launched from a catapult on an aircraft carrier. In 2.0 s it reaches a speed of 42 m/s at the end of the catapult
Dvinal [7]

Answer:

Explanation:

Given

time taken t=2\ s

Speed acquired in 2 sec v=42\ m/s

Here initial velocity is zero u=0

acceleration is the rate of change of velocity in a given time

a=\frac{v-u}{t}

a=\frac{42-0}{2}=21\ m/s^2

Distance travel in this time

s=ut+0.5at^2

where  

s=displacement

u=initial velocity

a=acceleration

t=time

s=0+\0.5\times 21\times (2)^2

s=42\ m

so Jet Plane travels a distance of 42 m in 2 s                                

5 0
3 years ago
PLEASEE HELPP ME
Mila [183]

Answer:

F = 2(50 N) - (50 N) = 50 N

Explanation:

The direction of F is the direction in which the two students are pushing.

3 0
2 years ago
Si un automóvil va viajando y por la cantidad de tráfico, avanza, se detiene, acelera, baja la velocidad, se detiene y luego sig
Fynjy0 [20]

Answer:

english please

Explanation:

6 0
2 years ago
A certain alarm clock ticks four times each second, with each tick representing half a period. The balance wheel consists of a t
Semenov [28]

Answer:

a. I=2.77x10^{-8} kg*m^2

b. K=4.37 x10^{-6} N*m

Explanation:

The inertia can be find using

a.

I = m*r^2

m = 0.95 g * \frac{1 kg}{1000g}=9.5x10^{-4} kg

r=0.54 cm * \frac{1m}{100cm} =5.4x10^{-3}m

I = 9.5x10^{-4}kg*(5.4x10^{-3}m)^2

I=2.77x10^{-8} kg*m^2

now to find the torsion constant can use knowing the period of the balance

b.

T=0.5 s

T=2\pi *\sqrt{\frac{I}{K}}

Solve to K'

K = \frac{4\pi^2* I}{T^2}=\frac{4\pi^2*2.7702 kg*m^2}{(0.5s)^2}

K=4.37 x10^{-6} N*m

3 0
3 years ago
Bob rides his bike with a constant speed of 10 miles per hour. How long will he take to travel a distance of 15 miles?
ICE Princess25 [194]

{\underline{\pink{\textsf{\textbf{ Answer : }}}}}

➡ 150hrs.

{\underline{\pink{\textsf{\textbf{Explanation : }}}}}

➡ Time = distance × speed

➡ Time = 15*10

➡ Time = 150hrs ans.

7 0
2 years ago
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