4 years ago

All of the following describe climate except

Physics

1 answer:

pantera1 [17]4 years ago

5 0

It is hot today
Climate is the annual weather/long period time.

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A person must pull a rope 20 meters with a force of 200 N what is the work input?

tatiyna

Work done = force * distance
work done = 200 * 20
work done = 4000J

4 0

3 years ago

Plane a travels at 900km/h and plane b travels at 250/5.which plane travels faster

vesna_86 [32]

Explanation:

We have,

Speed of plane a is 900 km/h

Plane b is moving at a rate of $\dfrac{250\ km}{5\ h}=50\ km/h$

It is required to find which plane is faster. To find which plane is faster, we need to compare their speeds.

Speed of a plane a is 900 km/h and that of plane b is 50 km/h. So, we can say that plane a is moving faster.

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3 years ago

A cat jumps off a piano that is 1.3m high. The initial velocity of the cat is 3m/s at an angle of 37degrees above the horizontal

SpyIntel [72]

Answer:

$x=1.75m$

Explanation:

From the exercise we have that

$y_{o}=1.3m\\v_{o}=3m/s, \beta =37\\$

To find how far from the edge of the piano does the cat strike the floor, we need to calculate its time first

$y=y_{o}+v_{oy}t+\frac{1}{2}gt^{2}$

At the end of the motion y=0m

$0=1.3+3sin(37)t-\frac{1}{2}(9.8)t^{2}$

Solving for t

$t=-0.36 s$ or $t=0.73s$

Since the time can't be negative the answer is t=0.73

Knowing that we can calculate how far does the cat strike the floor

$x=v_{ox}t=3cos(37)(0.73)=1.75m$

6 0

3 years ago

You want to build a search light. The search light is to have an outgoing parallel beam. You have a small, very bright light (a

andrew11 [14]

Answer:

1 m

Explanation:

Given

The mirror is a concave mirror.

Radius of curvature = 2 m

Now, for a parallel beam after reflection occurs, the object should be placed at the focus of the mirror.

We know, focal length = radius of curvature / 2

= 2 / 2

= 1

Thus the focal length is 1 m.

Hence the object should be placed at 1 m from the concave mirror for parallel beam reflection.

3 0

3 years ago

Describe the path taken by electricity through an incandescent light bulb.

Nana76 [90]

Answer:

take it out

Explanation:

4 0

3 years ago