What is the net force acting on the child?<br> 0 -100 N<br> O ON<br> O100 N<br> O 200 N

Are zebra fish schooling fish?

Alex73 [517]

Answer:

they r schooling fish

Explanation:

they need to be kept in groups of 5.

5 0

3 years ago

Read 2 more answers

Can you answer this math homework? Please!

kap26 [50]

$\large \mathfrak{Solution : }$

9. An object which is in circular motion (moving along a circle) is said to be accelerating because it changes it's direction constantly even if it is moving with a constant speed. cuz acceleration is change in either magnitude or direction of an object with respect to time.

therefore, it's still acceleration as change in direction with time.

10. Average speed of an object can be calculated by dividing the total distance covered by an object by time taken to cover that distance.

i.e

$\boxed{speed = \dfrac{distance}{time} }$

it can be re- arranged to find the distance as :

$\boxed{distance = speed \times time}$

$time = \dfrac{distance}{speed}$

11. speed = 20 m/s : conversion into km/h

distance covered : 4 km = 4000 m

$time = \dfrac{distance}{speed}$

$t = \dfrac{4000}{20}$

$t = 200 \: \: sec$

time taken = 200 seconds

12. let's use the first equation of motion to find the acceleration :

$v = u + at$

$50 = 80 + 120a$

$50 - 80 = 120a$

$a = \dfrac{ - 30}{120}$

$a = - \dfrac{1}{4} m/s {}^{2}$

$- 0.25 \: \: m/s {}^{2}$

3 0

2 years ago

790 kilometers/hour for a distance of 4,700 kilometers

chubhunter [2.5K]

Answer:

Explanation:

Time = (distance) / (average speed)

Time = (4,700 km) / (790 km/hr) = 5.9494 hours (rounded)

= 5hrs 56min 58 sec (rounded)

(4,700 km) / (1.609344 km/mile) = 2,920 miles

Speed = (distance covered) / (time to cover the distance)

(2,929 miles) / 5.9494 hours) = 491 miles per hour

5 0

2 years ago

You are watching an object that is moving in SHM. When the object is displaced 0.560 m to the right of its equilibrium position,

Ilia_Sergeevich [38]

Answer:

2.95m

Explanation:

The farthest distance the object can move is the radius of the circle of which the Simple harmonic motion is assumed to be a part

But V = w× r; where V is velocity,

w is angular velocity and r is radius.

Also,

a= w2r; where a is linear acceleration

but a = v× r ; by comparing both equations

Hence r = a/v =8.6/2.45 =3.51m

But the horizontal distance of the motion is given by:

X = rcosx ; where x is the angle

X is the distance covered.

We know that the maximum value of cos x is 1 which is 0°

When the object moves in a fashion directly parallel to an horizontal distance, maximum distance would be reached and hence:

X = r=3.51m

Meaning the object needs to travel 3.51-0.56=2.95m further.

Note: the acceleration of the motion is constant whether it is swinging towards the left or right.

3 0

3 years ago

please help me and give an explanation

algol [13]

Answer:

write: I think that we can only see one side of the moon because the moon rotates and spins on its axis at the same rate that the Moon orbits the Earth.

hope this is wht ur looking for. :)

Explanation:

4 0

2 years ago

What is the net force acting on the child? 0 -100 N O ON O100 N O 200 N