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jekas [21]
2 years ago
14

A 2 kg block is sitting motionless on a ramp at 24° with the horizontal. What is the force of friction on the block that resists

its motion?
Physics
1 answer:
vagabundo [1.1K]2 years ago
8 0

Answer:

7.97 N

Explanation:

f = m g sin(\alpha) = 2 * 9.8 * sin(24) = 7.97 N

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Question 5 Multiple Choice Worth 3 points)
Katyanochek1 [597]

Horn

Explanation:

Glaciers are powerful erosion forces as the occur. Erosion is the removal of products of weathering on the earth surface. Some of the feature of glacier erosion are:

  • Glacial horns
  • striations
  • cirques
  • glacial horns
  • arêtes
  • U-shaped valley e.t.c

Glaciers erode when they expand or slowly move during period of lower temperatures.

Glacier horns forms when glaciers eroded the sides of a peak leaving a sharp pointed structure behind.

Learn more:

wind erosion brainly.com/question/2115729

#learnwithBrainly

8 0
3 years ago
How much momentum does Elena's 1200kg car have if it is traveling with a velocity of 15 m/s N?
LenKa [72]

Answer:

18000kg.m/s

Explanation:

p=mv. 1200kg*15m/s

6 0
2 years ago
The Cosmo Clock 21 Ferris wheel in Yokohama, Japan, has a diameter of 100 m. Its name comes from its 60 arms, each of which can
Sonja [21]

Answer:

Explanation:

a ) speed of passenger = circumference / time

= 2π R / Time

= 2 x 3.14 x 50 / 60

= 5.23 m /s

b )

centrifugal force = m v² /R

= (882 /9.8 ) x 5.23² / 50

= 77.47 N

Apparent weight at the highest point

real weight  - centrifugal force

= 882 - 77.47

= 804.53 N

Apparent weight at the lowest point

real weight  + centrifugal force

= 882 +77.47

= 959.47 N

c )  if the passenger’s apparent weight at the highest point were zero

centrifugal force = weight

mv² /R = mg

v² = gR

= 9.8 X 50

v = 22.13 m /s

d )

apparent weight

mg - mv² / R

= 882 - (882 / 9.8 )x 22.13²/50

= 882 +  882

= 1764 N  

=

6 0
3 years ago
Fill in the blank
Anuta_ua [19.1K]

Answer: i think it’s plant and glass

Explanation:

8 0
2 years ago
Read 2 more answers
This is “Fusion Reactions”.<br> Please answer number 8. Thank you.
Angelina_Jolie [31]

Answer:

²₁H + ³₂He —> ⁴₂He + ¹₁H

Explanation:

From the question given above,

²₁H + ³₂He —> __ + ¹₁H

Let ⁿₐX be the unknown.

Thus the equation becomes:

²₁H + ³₂He —> ⁿₐX + ¹₁H

We shall determine, n, a and X. This can be obtained as follow:

For n:

2 + 3 = n + 1

5 = n + 1

Collect like terms

n = 5 – 1

n = 4

For a:

1 + 2 = a + 1

3 = a + 1

Collect like terms

a = 3 – 1

a = 2

For X:

n = 4

a = 2

X =?

ⁿₐX => ⁴₂X => ⁴₂He

Thus, the balanced equation is

²₁H + ³₂He —> ⁴₂He + ¹₁H

8 0
2 years ago
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