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Reika [66]
2 years ago
7

- What forces caused the rocket to no longer 'stay at rest' (its INERTIA)?

Physics
1 answer:
horsena [70]2 years ago
6 0

Answer:

Newtons first law

Explanation:

Objects stay at rest until a force acts on it causing it to move from its resting position  

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Light cannot escape the intense gravitational pull of a _____.
natima [27]
Black hole 
hope it helped
3 0
3 years ago
Read 2 more answers
A gamma ray photon has an energy of 0.91 GeV. (1 GeV = 109 eV.) What is the wavelength of the gamma ray in fm? (1 fm = 10-15 m)?
anastassius [24]

Answer:

\lambda=1.37 fm

Explanation:

The Planck Eistein relation, states that the energy of a photon is proportional to its frequency:

E=h\nu(1)

h is the Plank constant.The frequency of a photon is defined as the speed of light over its wavelength:

\nu=\frac{c}{\lambda}(2)

Replacing (2) in (1):

E=\frac{hc}{\lambda}\\\lambda=\frac{hc}{E}\\\lambda=\frac{(4.14*10^{-15}eV\cdot s)(3*10^8\frac{m}{s})}{0.91*10^{9}eV}\\\\\lambda=(1.37*10^{-15}m)*\frac{1fm}{10^{-15}m}\\\\\lambda=1.37 fm

6 0
2 years ago
The nucleus of most atoms is composed of which of the following sub-atomic particles? (A) tightly packed neutrons
solmaris [256]

Answer:

(B) tightly packed protons and neutrons

Explanation:

  • Nucleus of any atom is the dense central part of any atom.
  • It consists of two sub-atomic particle namely proton and neutron.
  • These sub-atomic parts are tightly packed in nucleus which makes the nucleus dense .
  • This dense nucleus is responsible for most of the mass of atom.
  • The atomic mass for any atom is decided by sum of  the mass of proton and neutron

Thus, correct answer is

(B) tightly packed protons and neutrons

4 0
2 years ago
Which name is given to the type of friction that an objects falling through the air experience
andrey2020 [161]
It is called Air resistance
3 0
3 years ago
An arrow is shot straight up in the air at an initial speed of 15 m/s. After how much time is the arrow heading downward at a sp
Greeley [361]

Answer:

2.35 seconds

Explanation:

Remark

This is a question where direction matters.  Let us call down + and up minus. It won't matter. The answer will be the same.

Formula

a = (vf - vi)/t

Givens

a = 9.8 m/s^2

vi = - 15 m/s

vf = 8m/s

Solution

9.8 = (8 - - 15)/t                 Multiply both sides by t

t * 9.8 = 23                       Divide by 9.8

t = 23/9.8

t = 2.35 s

7 0
2 years ago
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