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ehidna [41]
3 years ago
14

Determine the acceleration of a pendulum bob as it passes through an angle of 15 degrees to the right of the equilibrium point.

Physics
1 answer:
BigorU [14]3 years ago
7 0

Answer:

Explanation:

Since energy is conserved:

2

mu  

2

 

​

=  

2

mv  

2

 

​

+mgh

⇒u  

2

=v  

2

+2gh

⇒(3)  

2

=v  

2

+2(9.8)(0.5−0.5cos60)

⇒v=2m/s

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3.88 milligrams is equal to how many centigrams?
Lana71 [14]
1 centigram is equal to 10 milligrams.

Divide 3.88 milligrams by 10 to convert into centigrams.

3.88 / 10 = .388

The answer is .388 centigrams.
3 0
3 years ago
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A force of 8800 N is exerted on a piston that has an area of 0.010 m^2. What is the force exerted by a second piston that has an
professor190 [17]

Explanation:

It is given that,

Force on piston, F₁ = 8800 N

Area, A_1=0.01\ m^2

Area, A_2=0.04\ m^2

Let F₂ is the force exerted on the second piston. Using Pascal's law as :

Pressure at piston 1 = Pressure at piston 2

\dfrac{F_1}{A_1}=\dfrac{F_2}{A_2}

F_2=\dfrac{F_1}{A_1}\times A_2

F_2=\dfrac{8800}{0.01}\times 0.04

F_2=35200\ N

So, the force exerted by a second piston is 35200 N. Hence, this is the required solution.

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3 years ago
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16. After a crime scene has been photographed, the field inspector will collect and package the * O circumstantial evidence O sc
const2013 [10]

The physical evidence are the silent witnesses against the perpetrators of a crime

The correct option of what the field inspector packages after the crime scene has been photographed is the option;

  • <u>Physical evidence</u>

Reason:

Physical evidence are evidence that originate from inanimate objects or origin that is nonliving, and includes every material or object that serve as an indicator that someone has committed a crime, or that can link a perpetrator to crime

Examples include; Documents, hair, skin, fingerprints, weapons, soil, or fibers

The field inspector, collects the evidence that shows that a crime has been committed which are the physical evidence, after the crime scene has been photographed

Therefore, the correct option is; <u>Physical evidence</u>

Learn more here:

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3 years ago
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aleksklad [387]

Answer:

Inertia is the tendency of all objects to resist any change in motion. Inertia causes a moving object to stay in motion at the same velocity (speed and direction) unless a force acts on it to change its speed or direction. It also causes an object at rest to stay at rest.

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2 years ago
nolan ryan has the record for having the speediest fastball in baseball. he could pitch one at 148 i/sec. what is that speed in
Klio2033 [76]

The speed of the ball is 101miles/hr.

A mile is a unit of length that is exactly 1,609.344 metres long. Similarly, 5,280 feet or 1,760 yards make up one mile. The mile is an imperial and common US measurement of distance.

We just have to deal with unit conversions.

One mile is 5280 feet, or  1 ft = 0.000189

The speed of the ball in miles per hour is

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So, the speed of the ball in miles per hour is 101miles/hr.

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