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3 years ago

Helpppppp

Physics

1 answer:

aleksley [76]3 years ago

7 0

Negative celestial declinations are all positions in the sky that are directly over south surface latitudes.

Sirius is SOUTH of the celestial equator.

During the course of a year, it traces a circular path directly over the parallel of 16° South latitude, taking it over Peru, La Paz in Bolivia, St. Helena island in the Atlantic, Namibia, Angola, Zambia, Mozambique, Malawi, Madagascar, Australia, French Polynesia, American Samoa, and the Pacific Ocean.

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A student, starting from rest, slides down a water slide. On the way down, a kinetic frictional force (a nonconservative force)

katen-ka-za [31]

Answer:

Velocity will be equal to 7.31 m/sec

Explanation:

We have given mass of the student m = 61 kg

Height of the water slide h = 12.3 m

Acceleration due to gravity $g=9.8m/sec^2$

Potential energy is equal to $U=mgh=61\times 9.8\times 12.3=7352.94J$

Work done due to friction = -5800 J

So energy remained = 7352.94-5800 = 1552.94 J

This energy will be equal to kinetic energy

So $\frac{1}{2}mv^2=1552.94$

$\frac{1}{2}\times 61\times v^2=1552.94$

$v^2=50.91$

v = 7.13 m/sec

7 0

3 years ago

Driving at a safe speed is particularly important because kinetic energy __________.

oksian1 [2.3K]

The correct answer is
<span>b. increases with the square of speed

In fact, the kinetic energy of a moving object is given by
</span> $K= \frac{1}{2}mv^2$
<span>where m is the mass of the object and v is its speed. We see that the kinetic energy is directly proportional to the square of the speed, therefore option B is the correct one.</span>

5 0

3 years ago

The following three resistors (Ohms) are in parallel with one voltage source. What is the total current running through circuit?

Zepler [3.9K]

Explanation:

The total resistance Rt is given by

1/Rt = 1/Ra + 1/Rb + 1/Rc = 1/5 + 1/4 + 1/7 = 0.593

or Rt = 1.69 ohms

The total current I running through the circuit is

I = V/Rt = 2.37 A

6 0

3 years ago

PLEASE PLEASE HELP AND PUT A REAL ANSWER ;-;. ALSO WILL GIVE BRAINLEST!!

Xelga [282]

Answer:

Troposphere

High-pressure areas form due to downward motion through the troposphere, the atmospheric layer where weather occurs.

3 0

3 years ago

Jennifer's cat is stuck in a

Lelu [443]

The speed with which Jennifer climb up the tree is 0.45 m/s

The distance is 10m

Time is 22 seconds

Required speed is 10/22=0.45 m/s

Distance is the total length travelled by an object.
Speed is distance upon time.

It is a scalar quantity and doesn't has magnitude and direction.

Distance traveled is the total length of the path traveled between two positions
Distance is the total movement of an object without any regard to direction.
Distance is the total movement of an object without any regard to direction.

To learn more about distance visit at :

brainly.com/question/15256256

#SPJ9

5 0

2 years ago