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2 years ago

Which word in the following sentence should be capitalized in order to follow the conventions of Standard English?

Physics

1 answer:

Monica [59]2 years ago

3 0

Being that Alaska is a state, it should be capitalized. You always capitalize a state name

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The frequency of a person's pendulum is 0.3204 Hz when at a location where g is known to be exactly 9.800 m/s^2.

wel

Answer:

A) g = 9.751 m/s², B) h = 2.573 10⁴ m

Explanation:

The angular velocity of a pendulum is

w = √ g / L

Angular velocity and frequency are related.

w = 2π f

f = 1 / 2π √ g / L

A) with the initial data we can look for the pendulum length

L = 1 /4π² g / f²

L = 1 /4π² 9,800 / 0.3204²

L = 2.4181 m

The length of the pendulum does not change, let's look for the value of g for the new location

g = 4π² f² L

g = 4π² 0.3196² 2.4181

g = 9.75096 m / s²

g = 9.751 m/s²

B) The value of the acceleration of gravity can be found with the law of universal gravitation

F = G m M / $R_{e}$ ²

And Newton's second law

W = m g

W = F

G m M / $R_{e}$ ² = mg

g = G M / $R_{e}$ ²

$R_{e}$ ² = G M / g

Let's calculate

$R_{e}$ ² = 6.67 10⁻¹¹ 5.98 10²⁴ /9.75096

R = √ 4.0905 10¹³ = √ 40.9053 10¹²

R = 6.395726 10⁶ m

The height above sea level is

h = R - [tex]R_{e}[/tex

h = (6.395726 -6.37) 10⁶

h = 0.0257256 106

h = 2.573 10⁴ m

7 0

3 years ago

A grinding wheel is a uniform cylinder with a radius of 8.65 cm and a mass of 0.400 kg . Calculate its moment of inertia about i

anyanavicka [17]

Answer:

I = 1.5*10⁻³ kg*m²

Explanation:

It can be showed that the moment of inertia (or rotational inertia) for a uniform cylinder of mass m and radius r, respect an longitudinal axis going through its center (parallel to the height of the cylinder) can be written as follows:

$I = \frac{1}{2}*m*r^{2} = \frac{1}{2}*0.400 kg*(0.0865m)^{2} = 1.5e-3 kg*m2$

3 0

2 years ago

James Cameron piloted a submersible craft to the bottom of the Challenger Deep, the deepest point on the ocean's floor, 11,000 m

Over [174]

Answer:

$4.1\cdot 10^8 N$

Explanation:

First of all, we need to find the pressure exerted on the sphere, which is given by:

$p=p_0 + \rho g h$

where

$p_0 =1.01\cdot 10^5 Pa$ is the atmospheric pressure

$\rho = 1000 kg/m^3$ is the water density

$g=9.8 m/s^2$ is the gravitational acceleration

$h=11,000 m$ is the depth

Substituting,

$p=1.01\cdot 10^5 Pa + (1000 kg/m^3)(9.8 m/s^2)(11,000 m)=1.08\cdot 10^8 Pa$

The radius of the sphere is r = d/2= 1.1 m/2= 0.55 m

So the total area of the sphere is

$A=4 \pi r^2 = 4 \pi (0.55 m)^2=3.8 m^2$

And so, the inward force exerted on it is

$F=pA=(1.08\cdot 10^8 Pa)(3.8 m^2)=4.1\cdot 10^8 N$

8 0

2 years ago

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the physics concept corresponding to oomph is momentum. building on your above answers, figure out a formula for momentum (oomph

topjm [15]

Momentum = mass * velocity

I need parts A and B to explain the intuitions.

7 0

2 years ago

Sam and Ella are arguing at the baseball field. Sam says that if he throws a baseball with a greater speed, it will have a great

Elena L [17]

Don’t still need the answers or are u done and is it on edge

4 0

2 years ago

Read 2 more answers