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
vazorg [7]
3 years ago
10

You throw a glove straight upward to celebrate a victory. Its initial kinetic energy is K and it reaches a maximum height h. Wha

t is the kinetic energy of the glove when it is at the height h/2?
Physics
1 answer:
Rasek [7]3 years ago
5 0

Answer:

K/2

Explanation:

The law of conservation of mechanical energy states that the sum of the kinetic and potential energies is a constant at any point.

At maximum height, the glove has purely potential energy but at the bottom, it has purely kinetic energy.

The potential energy at the top = kinetic energy at the bottom. The potential energy is given by

PE = mgh

At half height, this potential energy is

PE = \frac{1}{2}mgh

At this height, PE + KE = Constant = KE at bottom or PE at maximum height.

mgh = \frac{1}{2}mgh +KE

KE = \frac{1}{2}mgh = K/2

You might be interested in
How has technology influenced theories over time?
Contact [7]
Better technology is helping us because we can see more stuff like the microscope we able to make assumptions based on what we saw.  
7 0
3 years ago
Baseball Digest is but one of several publications on the sport of baseball. True or False?
Gnoma [55]

Answertrue

Explanation:

3 0
3 years ago
Read 2 more answers
The people in a location in Florida mainly grow crops which need a lot of water. Which of these statements about the location be
Arisa [49]
The people of Florida are closest to the equator and also near 2 different bodies of water and have rivers running thru them as well salt water and fresh water. they need alot of freshwater due to monsoon seasons, hurricanes etc, its humid and hot there so naturally you need to water more often and frequently.
4 0
3 years ago
Read 2 more answers
The state of a medium affect the speed of sound
fenix001 [56]

Answer:

no it can not effect the speed of sound not shure tho

5 0
2 years ago
Name five characteristics of a star that can be determined by measuring its spectrum. Explain how you would use a spectrum to de
Ne4ueva [31]

Answer:

Chemical composition, Temperature, Radial velocity, Size or diameter of the star, Rotation.

Explanation:  

Elemental abundances are determined by analyzing the relative strengths of the absorption lines in the spectrum of a star.

The Spectral class to which the star belongs gives the information related to the temperature of the star. It is the spectral lines that determine the spectral class O B A F G K M are the spectral classes.

By measuring the wavelengths of the lines in the star's spectrum gives the radial velocity. Doppler shift is the method used to find the radial velocity.

A star can be classified as a giant or a dwarf . A giant star will have narrow width spectral lines whereas a dwarf star has wider spectral lines.

Broadening of the spectral lines will determine the star's rotation.

6 0
3 years ago
Other questions:
  • What acceleration is produced when a 12-N force is exerted on a 3-kg object?
    6·1 answer
  • How do base-isolators, the rubber and steel pads under some buildings, reduce earthquake damage?
    8·2 answers
  • A wave with high amplitude _____.
    11·2 answers
  • A 80-cm-wide object seen through an optical device appears inverted and 50 cm wide. What is the magnification of the optical dev
    9·1 answer
  • Sam is pulling a box up to the second story of his apartment via a string. The box weighs 16.5 kg and starts from rest on the gr
    9·1 answer
  • A record turntable is rotating at 33 rev/min. A watermelon seed is on the turntable 6.2 cm from the axis of rotation. (a) Calcul
    12·1 answer
  • What is the definition of power
    14·2 answers
  • A kΩ resistor is connected to an AC voltage source with an rms voltage of V. (a) What is the maximum potential difference across
    14·1 answer
  • A car is moving with 15000J of energy. If the car has a mass of 1500kg, how fast is it moving?
    10·1 answer
  • All of the following are examples of positive direction except:
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!