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jek_recluse [69]
3 years ago
5

Please help me, anybody?

Physics
2 answers:
notsponge [240]3 years ago
6 0
I will mark brainlist

can someone please help me write an autobiographical narrative story


Topic -
Time for a Change: Recall a time of change in your life. Maybe it was a time when you changed schools, moved to a new home, or added a new member to your family. Write an autobiographical narrative that describes this time of change and explains how that change affected you.
babymother [125]3 years ago
6 0

call 911 and they will help you

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A shell is fired at an initial speed of 2500 m/s at an initial angle of 45 degrees. Find the shell's horizontal range and the am
Airida [17]

Answer:

d= 637323 meters

t= 360.5 seconds

6 0
3 years ago
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A body of mass 400 g is moving along a smooth surface at a velocity of 10 m s–1 east. It strikes a body of mass 650 g, initially
9966 [12]

Answer: v = 2.53 m/s at E 53.1° S

Explanation:

Conservation of momentum

The 400 g object has no North-South velocity, so the initial momentum in that direction is zero. The total momentum after collision must also be zero

0 = 400(8sin35) + 650vy

vy = -2.82376... m/s

In the East direction

400(10) = 400(8cos35) + 650vx

vx = 2.121097...m/s

v = √(2.12² + 2.82²) = 3.531667... ≈ 2.53 m/s

θ = arctan(vy/vx) = arctan(-2.82/2.12) = -53.087... ≈ E53.1°S

4 0
3 years ago
Put these greenhouse effect events in order, starting with light's origin.
Fudgin [204]
Incident infrared radiation is blocked. Visible and ultraviolet radiation heat  Earth. Earth radiates infrared radiation. Infrared radiation is blocked and heats Earth. Visible and shortwave radiation heat Earth.Earth radiates longwave radiationLongwave radiation is reflected downward Longwave radiation <span>heats Earth</span>
3 0
3 years ago
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An electric motor transforms potential energy into mechanical energy.
nikklg [1K]

Answer:

t

Explanation:

4 0
3 years ago
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A 42.5 g piece of aluminum (which has a molar heat capacity of 24.03 j/ocmol) is heated to 82.4oc and dropped into a calorimeter
Leno4ka [110]
1. Use the equation q = nC∆T
n = mols of aluminum = 42.5g/ 6.98g/mol
C = molar heat capacity = 24.03 j/Cmol
∆T = change in T from what it was before placed in calorimeter to after =
24.9C-82.4C (because water final and metal will be same temp.)
plug in to calculate q of metal =
q = (42.5/6.98)*(24.03J)(24.9-82.4)
q = -2176.5498 J
qmetal = -q of water
plug in values for water
-(-2176.5498 J) = mC∆T (m = mass of water in grams)
m = q/C∆T
∆T=24.9-22.3 C = 2.6
2176.5498 J/(2.6x4.184) = m = 200.2714 g
4 0
3 years ago
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