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satela [25.4K]
3 years ago
10

A drag racer starts from rest and accelerates at 10 m/s squared for the

Physics
1 answer:
nika2105 [10]3 years ago
6 0

Answer:

54 \frac{m}{s}

Explanation:

v=u+at

where u=initial velocity

v=0+(10\frac{m}{s^{2} } )×(5.4s)

v=54\frac{m}{s}

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The mass after a physical change, such as ice melting into water, stays the same a. -true b. -false.
kupik [55]

Answer:

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Explanation:

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3 0
2 years ago
When running a 100 meter race Wyatt reaches his maximum speed when he is 40 meters from the starting line, and 7 seconds have el
mixas84 [53]

Answer:

9 m/s

Explanation:

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3 years ago
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5 0
3 years ago
Read 2 more answers
The de Broglie wavelength of an electron traveling at 7.0 x 107m/s is 1.0 x 10-11m. (Remember that me = 9.1 x 10-31kg and h = 6.
ivolga24 [154]

The De Broglie's wavelength of a particle is given by:

\lambda=\frac{h}{p}

where

h=6.6 \cdot 10^{-34} Js is the Planck constant

p is the momentum of the particle


In this problem, the momentum of the electron is equal to the product between its mass and its speed:

p=m_e v=(9.1 \cdot 10^{-31} kg)(7.0 \cdot 10^7 m/s)=6.4 \cdot 10^{-23} kg m/s

and if we substitute this into the previous equation, we find the De Broglie wavelength of the electron:

\lambda=\frac{h}{p}=\frac{6.6 \cdot 10^{-34} Js}{6.4 \cdot 10^{-23} kg m/s}=1.0 \cdot 10^{-11} m


So, the answer is True.

7 0
3 years ago
What is the specific heat of water? A. 1.00 J/gºC
Leona [35]

Answer:

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3 years ago
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