1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
KiRa [710]
3 years ago
15

An athlete at the gym holds a 2.5 kg steel ball in his hand. His arm is 70 cm long and has a mass of 4.0 kg.

Physics
1 answer:
aleksandr82 [10.1K]3 years ago
6 0

Answer:

B

Explanation:

Yea

You might be interested in
The constant pressure molar heat capacity, C_{p,m}C p,m ​ , of nitrogen gas, N_2N 2 ​ , is 29.125\text{ J K}^{-1}\text{ mol}^{-1
antoniya [11.8K]

Answer:

Explanation:

Constant pressure molar heat capacity Cp = 29.125 J /K.mol

If Cv be constant volume molar heat capacity

Cp - Cv = R

Cv = Cp - R

= 29.125 - 8.314 J

= 20.811 J

change in internal energy = n x Cv x Δ T

n is number of moles , Cv is molar heat capacity at constant volume ,  Δ T is change in temperature

Putting the values

= 20 x 20.811 x 15

= 6243.3 J.

3 0
3 years ago
Two sacks contain the same number of identical apples and are separated by a distance r. The two sacks exert a gravitational for
stepan [7]

Answer:

Explanation:

im sleppy

3 0
3 years ago
QUICKK I NEED HELP!!<br> How is a mineral different from an element rock
Irina18 [472]

Answer:here you goo

Explanation:

A mineral is a naturally occurring inorganic element or compound having an orderly internal structure and characteristic chemical composition, crystal form, and physical properties. ... A rock is an aggregate of one or more minerals, or a body of undifferentiated mineral matter.

7 0
3 years ago
Read 2 more answers
a baseball pitcher throws a fastball at 98 mph. he also has a slower "changeup" pitch, 75 mph, which he throws identically, same
notsponge [240]

Answer:

For these reasons at 98 mph the path is straighter

Explanation:

To solve this problem we are going to use the kinematic equations, specifically those of projectile launches, let's calculate the distances that the ball travels

     

          X = Vox t

          Y = Yo +  Voy t - ½ g t²

They tell us that the only parameter that changes is the speed, so the distance to the plate is known

          t = Vox / x

 

We replace

         Y- Yo = Voy (Vox / X) - ½ g (Vox / x)²2

       Y -Yo = Vo² sinθ cos θ / x - ½ g Vo² sin²θ / x²

        Y -Yo = Vo² (sinθ cosθ / x - ½ g sin²θ / x²)

The trajectory will be flatter when Y is as close as possible to Yo, when examining the right side of the equation, the amount in Parentheses is constant and to what they tell us that the angles and the distance the plate does not change.

Consequently, of the above, the only amount changes is the initial speed if it increases the square of the same increases, so that the height Y approaches the height of the shoulder, that is, DY decreases. For these reasons at 98 mph the path is straighter

7 0
3 years ago
the part of the brain stem called the has been shown to related to arousal in lab animals. when this part is stimulated the anim
riadik2000 [5.3K]

Answer:

Its called PSY

Explanation: I so do not know why they named it this way but, hope i helped.

3 0
3 years ago
Other questions:
  • Indy runs 2 kilometers every morning. She takes 2 minutes for the first 250 meters, 4 minutes for the next 1,000 meters, 1 minut
    5·2 answers
  • An engine exhausts 1140 j of energy for every 3790 j of energy it takes in. what is its efficiency?
    11·1 answer
  • A magnet is useful in generating electricity because a magnetic force moves
    15·1 answer
  • A man stands at the midpoint between two speakers that are broadcasting an amplified static hiss uniformly in all directions. Th
    10·1 answer
  • Water enters a baseboard radiator at 180 °F and at a flow rate of 2.0 gpm. Assuming the radiator releases heat into the room at
    6·1 answer
  • A 5 kilogram block is dropped from a height of 3 meters and falls straight to the ground. What is the work done by the force of
    5·1 answer
  • PLEASE HELP ME I AM TIMED!
    7·2 answers
  • Which of the following cannot be used to describe a longitudinal wave?
    10·1 answer
  • The measured value of mass M in an experiment is M = 0.743 ± 0.005kg. The error in 2M is
    7·1 answer
  • A richter magnitude 8 earthquake is ________ times greater than a richter magnitude of 7.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!