3 years ago

To t

Physics

1 answer:

daser333 [38]3 years ago

4 0

Answer:

Welcome ShalomMHNCB Phx

Explanation:

the answer is because I just had this question and I got it wrong so te answer is 0.43

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A satellite is orbiting the Earth in a circular orbit of radius r. Its frequency is independent of its height above the surface

Pie

Answer:

a. TRUE

Explanation:

When a satellite is launched to orbit around earth, it has to produce its own artificial gravity by performing rotations. The frequency of this rotation is given by the following formula:

f = √[ac/4πR²]

where,

f = frequency

ac = centripetal acceleration

R = Radius of the satellite

Therefore, it is clear from this formula that the frequency of rotation of the satellite is independent of its height above the surface of earth. So, the correct option is:

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2 years ago

A bronze statue weighs 1200 N and has a base of 2m^2. What is the pressure the statue

notka56 [123]

Answer:

Explanation:

P = F/A

F = 1200 N

A = 2 m^2

P = 1200N/2 m^2

P = 600 N / m^2

7 0

2 years ago

A particular X-ray photon has initial energy of 60 keV when it enters the body. This photon transmits through 30 cm of soft tiss

ankoles [38]

Answer:

E = 7.334 KeV

Explanation:

given,

initial energy = 60 keV

Δ x = 30 cm

$E = E_0e^{-\mu \Delta x}$

μ(for soft tissue) = 0.7 cm⁻¹ (taken from table)

$E = E_0e^{-0.7\times 20}$

E = 60 × 0.1224

E = 7.334 KeV

energy of x-ray photon after travelling through 30 cm soft tissue in body is E = 7.334 KeV

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3 years ago

Osteoporosis is a condition that makes bones more

erastova [34]

the answer for this question is c

7 0

2 years ago

A spaceship is travelling at 20,000.0 m/s. After 5.0 seconds, the rocket thrusters are turned on. At the 55.0 second mark, the s

tankabanditka [31]

Answer:

$80 m/s^2$

Explanation:

The acceleration of an object is given by:

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

where

v is the final velocity

u is the initial velocity

t is the time interval it takes for the velocity to change from u to v

For the rocket in this problem,

u = 20,000 m/s

v = 24,000 m/s

t = 55.0 - 5.0 = 50.0 s

Substituting,

$a=\frac{24000-20000}{50}=80 m/s^2$

7 0

2 years ago