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4 years ago

5

Give an example where the following energy transformation would occur: Chemical to thermal *

1 answer:

attashe74 [19]4 years ago

7 0

One example could be a furnace burning natural gas in a chemical reaction. As the natural gas burns, heat is released causing air molecules to move faster. The temperature of the air increases because they have more thermal energy which is used to heat a house.

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A force platform is a tool used to analyze the performance of athletes measuring the vertical force that the athlete exerts on t

Phoenix [80]

Answer:

a. $I=981.34 N*s$

b. $v_f=3.96 m/s$

c. $v_{f1}=3.63m/s$

d. $y_f=0.673m$

Explanation:

Given: $m=67kg$ , $h=0.720m$ , $0$

a.

$I=\int\limits^{t_1}_{t_2} {F(t)} \, dt$

$F(t)=9200*t-11500t^2$

$I=\int\limits^{0.8s}_{0s}{9200*t-11500*t^2} \, dt$

$I=4600*t^2-3833.3*t^3|(0.80,0)$

$I=2944-1962.66=981.35$

$I=981.34 N*s$

b.

$v_f^2=v_i^2+a*y'$

Starting from the rest

$v_f^2=0+2*9.8m/s^2*0.80s$

$v_f^2=15.68$

$v_f=\sqrt{15.68m^2/s^2}=3.96 m/s$

c.

$I_{total}=p_f$

$I_1-m*g*d=m*v_{f1}-m*v_f$

$981.34-67kg*9.8m/s^2*0.720=67.0kg*v_{f1}-67.0kg*(-3.96m/s)$

Solve to vf

$v_{f1}=3.63m/s$

d.

$v_f^2=v_i^2+2*a*y_f'$

$y_f'=v_i/2*a =(3.63m/s)^2/2*9.8m/s^2$

$y_f=0.673m$

7 0

3 years ago

What is the Kinetic Energy of a 5kg object traveling at 10 m/s?

Marat540 [252]

Answer:

KE = 250 kg/m/s

Explanation:

use the formula: KE = 1/2 m (v^2)

KE = 1/2 (5) (10^2)

KE = (2.5) (100)

KE = 250 kg/m/s

3 0

3 years ago

A 60 kg gorilla named Anthony Falcon is standing on his skateboard. This is on planet Erf,

djyliett [7]

F= ma
F= (600/-10) -10
F= 580n

At least I think that’s the answer

4 0

3 years ago

An object is suspended from the ceiling with two wires that make an angle of 40° with the ceiling. The weight of the body is 150

MaRussiya [10]

Refer to the diagram shown below.

Let T = the tension in each wire.
For equilibrium,
2T cos(50°) = 150 N
1.2856T = 150
T = 116.677 N ≈ 117 N

Answer: 117 N

5 0

3 years ago

A person experiencing heat

balu736 [363]

Answer:

it will be heavy sweating

Explanation:

because if humans expierment a heavy heat they might be sweating heavly

7 0

3 years ago