Answer:
sin 30° = 
Multiply each side by 25 to cancel the 25 under 
(25)· sin 30° =
Multiply everything on the left side.
12.5 
= vertical velocity component.
I attached a picture, I hope it helps.
Answer: More friction
Explanation: The wood would probably splinter, causing even more friction, while the metal would probably smooth the wood out.
"Transverse" means that <span>the molecules of the medium vibrate
at right angles to the direction in which the wave travels.
</span>
The velocity of the mass at time, t = 1 s, is determined as 20 m/s.
<h3>
Magnitude of the force experienced by the body</h3>
The magnitude of the force experienced by the body is calculated as follows;
|F| = √(8² + 6²)
|F| = 10 N
<h3>Acceleration of the mass</h3>
From Newton's second law of motion;
F = ma
where;
- m is mass
- a is acceleration
a = F/m
a = 10 /0.5
a = 20 m/s²
<h3>Velocity of the mass after 1 second</h3>
v = at
v = 20 x 1
v = 20 m/s
Learn more about velocity here: brainly.com/question/6504879
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Answer:
• The amount of heat required to melt ice and raise the temperature of water T^oCToC is
Q=mL_f+mc\Delta TQ=mLf+mcΔT
Here m=1.5 kgm=1.5kg
L_f=3.33*10^5 J/kgLf=3.33∗105J/kg is Latent heat of fusion of ice.
c=4186 J/kg.^oCc=4186J/kg.oC is heat capacity of water.
\Delta T=50 ^oC-0^oC=50^oCΔT=50oC−0oC=50oC
So,
Q=(1.50)[3.33*10^5 +(4186)(50)]=8.13*10^5 JQ=(1.50)[3.33∗105+(4186)(50)]=8.13∗105J
