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3 years ago

Define the terms "Calorie" and "Joule"

Physics

1 answer:

Paraphin [41]3 years ago

5 0

Answer:

A calorie is defined as the amount of energy needed to raise the temperature of one gram of water one degree Celsius.

Explanation:

The other unit used to measure heat is the joule. The joule is the SI (System International) unit

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A 265 g mass attached to a horizontal spring oscillates at a frequency of 3.40 Hz . At t =0s, the mass is at x= 6.20 cm and has

lara [203]

Answer:

The phase constant is 7.25 degree

Explanation:

given data

mass = 265 g

frequency = 3.40 Hz

time t = 0 s

x = 6.20 cm

vx = - 35.0 cm/s

solution

as phase constant is express as

y = A cosФ ..............1

here A is amplitude that is = $\sqrt{(\frac{v_x}{\omega })^2+y^2 }$ = $\sqrt{(\frac{35}{2\times \pi \times y})^2+6.2^2 }$ = 6.25 cm

put value in equation 1

6.20 = 6.25 cosФ

cosФ = 0.992

Ф = 7.25 degree

so the phase constant is 7.25 degree

5 0

4 years ago

A) An automobile light has a 1.0-A current when it is connected to a 12-V battery. Determine the resistance of the light.

kirill [66]

Answer:

The resistance in first case is 12 Ω, power delivered is 12 W, and potential difference is 0.01 V

Explanation:

Given:

(A)

Current $I = 1$ A

Voltage $V = 12$ V

For finding the resistance,

$V = IR$

$R = \frac{V}{I}$

$R = \frac{12}{1}$

$R =$ 12Ω

(B)

For finding power delivered,

$P = I^{2} R$

$P = (1) ^{2} \times 12$

$P = 12$ Watt

(C)

For finding the potential difference,

$V = IR$

$V = 5 \times 10^{-3} \times 2$

$V = 10 \times 10^{-3}$

$V = 0.01$ V

Therefore, the resistance in first case is 12 Ω, power delivered is 12 W, and potential difference is 0.01 V

4 0

3 years ago

A bicyclist with a mass of 50 kg is traveling at a rate of 30 m/s. It accelerates to a rate of 50 m/s in 5 seconds. What is the

balandron [24]

Answer:

F=m*(v^2/r)

F=82*(8^2/30)

F=174.9N

Explanation:

brainlest pls

8 0

3 years ago

Some help me on this please

satela [25.4K]

Answer:

Changes in the object's momentum (answer D)

Explanation:

A net force will cause an object to change its velocity, and that will affect the object's momentum, which is defined by the product of the object's mass times its velocity.

So, select the last option (D) in the given list.

8 0

3 years ago

A 60.0-kg skier with an initial speed of 12.0 m/s coasts up a 2.50-mhigh rise and angle is 35 degrees.Find her final speed at th

Shalnov [3]

Wt. = Fg = m*g = 60kg * 9.8N/kg=588 N.=
Wt. of skier. 

Fp=588*sin35 = 337 N.=Force parallel to 
incline. 
Fv = 588*cos35 = 482 N. = Force perpendicular to incline. 

Fk = u*Fv = 0.08 * 482 = 38.5 N. = Force 
of kinetic friction. 
d =h/sinA = 2.5/sin35 = 4.36 m. 

Ek + Ep = Ekmax - Fk*d 
Ek = Ekmax-Ep-Fk*d 
Ek=0.5*60*12^2-588*2.5-38.5*4.36=2682 J. 
Ek = 0.5m*V^2 = 2682 J. 
30*V^2 = 2682 
V^2 = 89.4 
V = 9.5 m/s = Final velocity.

4 0

4 years ago

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Define the terms "Calorie" and "Joule"​

Define the terms "Calorie" and "Joule"