A car has a mass of 2,000 kg and is traveling at 28m/s. What is the car’s kinetic energy?

Compound axial member ABC has a uniform diameter of d = 1.50 in. Segment (1) is an aluminum [E1 = 10,000 ksi] alloy rod with a l

skad [1K]

Explanation:

Below is an attachment containing the solution.

5 0

3 years ago

Identify and define characteristics of both visible and sound waves. These include but are not limited to frequency, pitch, ampl

jeyben [28]

<h3>Answer and explanation;</h3>

Sound waves are mechanical waves and are examples of the longitudinal type, a longitudinal wave involves the movement of molecules in the medium parallel to the direction of the wave.
Sound waves are longitudinal mechanical waves because they move particles parallel to their direction of travel. For example, if a sound wave travels from left to right.
Pitch is what we perceive as the low or high note quality of a sound. Pitch is determined by the frequency of the sound wave that moved through the air to our eardrums. Frequency is the time taken for a complete oscillation of a wave.
The more energy or work used to create the vibration, which in turn creates the sound wave, the greater the amplitude of the wave and the louder the sound. Wavelength is the distance between two successive rarefactions or compression in a longitudinal wave.
For example, if you were to lightly hit a drum with a drum stick, there would be a softer sound as opposed to the loud boom that would be created if you hit the drum with all of your might

3 0

3 years ago

Two people, one of mass 90 kg and the other of mass 60 kg , sit in a rowboat of mass 78 kg . With the boat initially at rest, th

DENIUS [597]

Answer:

boat will move by 0.46 m

Explanation:

Here as we know that the two persons are sitting on the boat at rest

And here the boat along with all persons are at rest

There is no other force on this system

So here the center of mass of the system will remains at rest always

so the displacement of the center of the mass will be zero

$\Delta x_{cm} = \frac{m_1x_1 + m_2x_2 + m_3x_3}{m_1 + m_2 + m_3}$

now we can say that boat moves a distance "x" opposite to the motion of 90 kg person

so we will have

$0 = \frac{90(3.5 - x) + 60(-x - 3.5) + 78(-x)}{90 + 60 + 78}$

$0 = 315 - 90x - 60x - 210 -78x$

$228 x = 105$

$x = 0.46 m$

5 0

3 years ago

12. Electrical current supplied by a battery is called

elena-14-01-66 [18.8K]

Answer:Alternating Current.

I don't know if i'm right

Explanation:

4 0

3 years ago

Thanks really would appriate if only

loris [4]

CIRCULATORY SYSTEM: transports materials; major organs are heart, blood vessels; tissues are blood, cardiac muscle tissue, smooth muscle tissue; cells are cardiac muscle cells, blood cells, smooth muscle cells.

RESPIRATORY SYSTEM: exchanges oxygen and carbon dioxide; major organs are lungs and bronchi; tissue is epithelial linings; cells are epithelial cells.

DIGESTIVE SYSTEM: breaks down food into usable form; major organs are esophagus,stomach, intestines; tissue is smooth muscle tissue; cells are smooth muscle cells.

URINARY SYSTEM: removes wastes from blood; major organs are kidneys, bladder, ureters, urethra; tissue is nephrons; smooth muscle cells.

NERVOUS SYSTEM: sends messages throughout body; major organs are brain, spinal cord; nerve tissue; neurons cells.

ENDOCRINE SYSTEM: regulates body functions; major organs are adrenal glands, pituitary gland; tissues are tissues that secrete hormones; cells are target cells

INTEGUMENTARY SYSTEM: protects and covers internal structures; major organs are skin, sweat glands; tissues are epidermal and dermal, tissues; epidermal cells.

IMMUNE SYSTEM: protects body from disease; major organs are lymph glands; tissues are lymph tissues; cells are white blood cells.

Hope this info helps because this took forever haha

3 0

3 years ago