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3 years ago

Classify each of the following as a physical or chemical property of

Physics

1 answer:

notka56 [123]3 years ago

7 0

A) physical.
b) chemical
c) physical.
d) physical.
e) physical.

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Interactive Solution 6.39 presents a model for solving this problem. A slingshot fires a pebble from the top of a building at a

slava [35]

Answer:

Given that

u = 13 m/s

h= 23 m

a) horizontally

We know that acceleration due top gravity is in vertical direction.

v²=u'²+ 2 g h ( u'= 0 )

v² = 2 x 9.81 x 23

v= 21.24 m/s ( vertical direction)

In the horizontal direction

u = 13 m/s

The resultant velocity

V²=v²+u²

V²=21.24²+13²

V= 24.91 m/s

(b) vertically straight up

u= 13 m/s

v²=u²+ 2 g h

v²=13²+ 2 x 9.81 x 23

v= 24.91 m./s

c)vertically straight down.

u= 13 m/s

v²=u²+ 2 g h

v²=13²+ 2 x 9.81 x 23

v= 24.91 m./s

4 0

3 years ago

Which letter represents the wavelength of the wave?a. a.

Leviafan [203]

Answer: a? i would need more information

6 0

4 years ago

Read 2 more answers

How does energy move through an ecosystem?

Colt1911 [192]

In an Ecosystem, Energy moves from Lower trophic level to higher trophic levels. Example:

Plants ---> rabbit ---> lion

Hope this helps!

3 0

3 years ago

A 1.5 kg ball is thrown upward at 10 m/s. What is its velocity when it is 2 m above the release point?

Anestetic [448]

Answer:

7.75m/s or $2\sqrt{15}m/s$

Explanation:

m = 1.5kg

u= 10m/s

s = 2m

a = $10m/s^{2}$

v = ?

acceleration due to gravity is negative when an object is going up because the force of gravity reduces the speed of the object

using the formula ;

$v^{2} = u^{2} - 2as$ since the object is moving upwards (negative acceleration)

= 100 - 2(10)(2)

100 - 40

$v^{2}$ = 60

v = $\sqrt{60}$

= 7.75m/s

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3 years ago

The Space Shuttle does not directly inject into its prescribed mission orbit. Rather, themain engine shutdown occurs at the apog

iris [78.8K]

Answer:

(a) burnout speed at apogee in the external tank disposal orbit=7.82 km/sec

(b) ΔV required for the OMS-1 =0.066 km/sec

(d) This part of the question is explained in detailed way in the attached file.

Explanation:

Detailed explanation of all the parts of the question are given in attached files.

8 0

3 years ago