All categories

3 years ago

A. 24.89 B. 25.89 C. 17.74 D. 19.73

Physics

1 answer:

Veronika [31]3 years ago

5 0

Answer: D

Explanation:

Just did it got an 100

You might be interested in

A particle vibrates in Simple Harmonic Motion with amplitude. What will be its displacement in one time-period? A 2A 4A 0

yan [13]

'Displacement' is the distance and direction between the starting point and
ending point, regardless of the path followed to get there.

A particle that's executing simple harmonic motion is always in the same place
where it was one time period ago, and where it will be later after another time
period has passed.

So its displacement during exactly one time period is exactly zero.

3 0

4 years ago

Two trains, each having a speed of 28 km/h, are headed at each other on the same straight track. A bird that can fly 60 km/h fli

Semenov [28]

Answer:

The value is $D = 70.71 \ km$

Explanation:

From the question we are told that

The speed of each train is $v = 28 \ km/h$

The speed of the bird is $v_1 = 60 \ km/h$

The distance between the trains is $d = 66 \ km$

Generally the time taken before the collision occurs is mathematically represented as

$t = \frac{d}{2 * v}$

=> $t = \frac{66 }{2 * 28}$

=> $t = 1.18 \ h$

The total distance covered by the bird is mathematically represented as

$D = v_1 * t$

=> $D = 60 * 1.18$

=> $D = 70.71 \ km$

7 0

3 years ago

In 1996, astronomers discovered an icy object beyond pluto that was given the designation 1996 tl 66. it has a semimajor axis of

antoniya [11.8K]

Answer : 2446 years.

Explanation :

Length of semi major axis is, $a=84\ au= 1.496\times 10^{11}\ m$

According to Kepler's third law, square of time period of an orbit is directly proportional to the cube of the semi major axis.

i.e $T^2=\dfrac{4\pi^2}{GM}a^3$

where G is gravitational constant

M is mass of sun, $M=1.98\times 10^{30}\ Kg$

So, $T^2=\dfrac{4\times (3.14)^2}{6.6\times 10^{-11}Nm^2/Kg\times 1.98\times 10^{30}\Kg}$

$T^2=3\times 10^{-19}\times(84\times 1.496\times 10^{11})^3$

$T^2=3\times 10^{-19}\times 1984415.6\times 10^{33}$

$T^2=59532469.8\times 10^{14}\ s$

$T=7715.7\times 10^7\ s$

since, $1\ sec=3.17\times 10^{-8}\ years$

So, orbital period is approximately 2446 years.

7 0

4 years ago

Taste and smell are called chemical senses because:

Bingel [31]

Answer:

The answer is a," their receptors are sensitive to chemical molecules."

3 0

4 years ago

What best describes myotibrils

krok68 [10]

Myofibrils are composed of long proteins such as actin, myosin, and titin, and other proteins that hold them together. These proteins are organized into thin filaments and thick filaments, which repeat along the length of the myofibril in sections called sarcomeres. Muscles contract by sliding the thin (actin) and thick (myosin) filaments along each other.

8 0

3 years ago