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Aliun [14]
3 years ago
10

Isaac Newton was an English physicist who lived in the mid 1600s to the early 1700s. Newton stated that all objects are attracte

d to each other by the force of gravity. James Joule was also an English physicist who lived in the 1800s. Joule stated that energy could change forms, but it could not be created or destroyed. How are these two statements similar? A. Neither statement was supported by scientific evidence. B. Both statements are examples of scientific laws. C. Neither statement is considered true today. D. Both statements were proposed in the same century.
Physics
2 answers:
NISA [10]3 years ago
6 0

Answer:

both staments are examples of scientfic laws

Explanation:

idk

Kisachek [45]3 years ago
6 0

Answer:

both staments are examples of scientfic laws

Explanation:

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Read 2 more answers
A truck has shock absorbers with a spring constant of 24200 N/m. When it hits a bump, it oscillates at 0.429 Hz. What is the mas
siniylev [52]

Answer:

3331.5 kg

Explanation:

Given:

Spring constant of the spring (k) = 24200 N/m

Frequency of oscillation (f) = 0.429 Hz

Let the mass be 'm' kg.

Now, we know that, a spring-mass system undergoes Simple Harmonic Motion (SHM). The frequency of oscillation of SHM is given as:

f=\frac{1}{2\pi}\sqrt{\frac{k}{m}}

Rewrite the above equation in terms of 'm'. This gives,

2\pi f=\sqrt{\frac{k}{m}}\\\\Squaring\ both\ sides,\ we\ get:\\\\(2\pi f)^2=\frac{k}{m}\\\\m=\frac{k}{4\pi^2 f^2}

Now, plug in the given values and solve for 'm'. This gives,

m=\frac{24200\ N/m}{4\pi^2\times (0.429\ Hz)^2 }\\\\m=\frac{24200\ N/m}{4\pi^2\times 0.184\ Hz^2}\\\\m\approx3331.5\ kg

Therefore, the mass of the truck is 3331.5 kg.

3 0
3 years ago
Can anyone help me with questions a and c​
Ganezh [65]

Answer:

a)

n=sin i/sin r

n= -0.305/-0.428

n=0.713

b)

sin c=1/n

sin c=1/0.713

sin c= 1.403

c=sin⁻¹(1.403)

c= 40.842°

Explanation:

i hope it will be helpful

plzzz mark as brainliest

5 0
2 years ago
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