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juin [17]
3 years ago
11

When throwing curveballs in baseball, is it important to have air hit the ______ part of the ball.

Physics
2 answers:
Licemer1 [7]3 years ago
7 0

Answer: A (smooth)

Thanks for using Brainly! You or your parents Vote Biden 2020.

Hope we influence your vote!

Ede4ka [16]3 years ago
5 0

Answer:

Rough

Explanation:

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A centripetal force of 190 N acts on a 1,550-kg satellite moving with a speed of 5,300 m/s in a circular orbit around a planet.
kvasek [131]

Answer:

Radius, r is equal to 229.16×10^6m

Explanation:

Given the following parameters;

Centripetal force on the satellite, Fc = 190N.

Mass of the satellite, M = 1,550-kg.

Speed of the satellite, V = 5,300m/s.

The relationship between a satellite of mass (m) moving in a circular orbit of radius (r) with a speed (v) and a centripetal force (Fc) is given by the equation;

Fc = (MV²)/r

Since, we're solving radius, r; we make "r" the subject of formula;

Thus, r = (MV²)/Fc

Substituting into the above equation;

r = (1550 × [5300]²)/190

r = (1550 × 28090000)/190

r = 43539500000/190

r = 229155263.16

Radius, r is equal to 229.16 × 10^6m

4 0
3 years ago
A 45.0 kilogram boy is riding a 15.0-kilogram bicycle with a speed of 8.00 meters per second. What is the combined kinetic energ
svlad2 [7]

Answer:

1920Joules

Explanation:

The formula for calculating the kinetic energy of a body is expressed as;

KE = 1/2 mv²

m isthe mass

V is the speed

For the two masses, the combined KE is expressed as;

KE  = 1/2(m1+m2)v²

KE = 1/2(45+15)(8)²

KE  = 1/2 * 60 * 64

KE  = 30 * 64

KE  = 1920J

Hence the combined kinetic energy of the boy and the bicycle is 1920Joules

3 0
3 years ago
you can find the power of an electric appliance by measuring the energy it transfers in a certain what?
ki77a [65]
Why is school so hard
7 0
3 years ago
Problem Solving | Should your directions to a friend for traveling from one city to another include displacements or distances?
wlad13 [49]
This should include distances.  Displacement is the shortest distance from point A to point B.  Distance is the total length of travel.  For an example I have included a simple map.

Displacement would not be an accurate representation of the driving instructions because it would not tell the total length of travel.  Basically, the driver would be going through buildings if you told them displacement.  Directions would tell them the roads traveled.

3 0
4 years ago
4. The length of a simple pendulum whose time period is 2 second ?<br>​
Scilla [17]

Answer:

We know that the time period of the vibration of the second's pendulum is T=2s. Hence, the length of the second's pendulum is 99.3 cm

3 0
2 years ago
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