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3 years ago

The Honda cr-z gets 27 miles per gallon on average. How many co2 were emitted if this Honda was driven 386 miles

Physics

1 answer:

Volgvan3 years ago

3 0

4000 miles because I did the math online and showed my work on there

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An object with a mass of 8.9kg has a force of 92.0 Newtons applied to it. What is the resulting acceleration

lesya [120]

Answer:

10.337m/s2

Explanation:

F=ma

a=F/m

a = 92 / 8.9 = 10.337m/s2

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3 years ago

What is the primary mechanical advantage of a screw?

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Which of the following best describes the circuit shown below?

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Answer:

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3 years ago

Jupiter's moon Io has active volcanoes (in fact, it is the most volcanically active body in the solar system) that eject materia

melisa1 [442]

Answer:

$H_2 = 91.55 km$

Explanation:

Gravity on the surface of planet is given as

$g = \frac{GM}{R^2}$

as we know that

$M = 8.93 \times 10^{22} kg$

$R = 1821 km$

now gravity on the planet is

$g = \frac{(6.67 \times 10^{-11})(8.93 \times 10^{22})}{(1821 \times 10^3)^}$

so we have

$g = 1.8 m/s^2$

now we know that

$H_{max} = \frac{v^2}{2g}$

so we will say

$\frac{H_1}{H_2} = \frac{g_2}{g_1}$

$\frac{500}{H_2} = \frac{9.81}{1.8}$

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3 years ago

A water heater warms 35 l of water from a temperature of 22.7 c to a temperature of 83.7

fgiga [73]

The amount of energy needed to increase the temperature of a substance by $\Delta T$ is given by
$Q=m C_s \Delta T$
where
m is the mass of the substance
$C_s$ is its specific heat capacity
$\Delta T$ is the increase in temperature

The water volume is $V=35 L= 35 dm^3 = 0.035 m^3$ , since its density is $d=1000 kg/m^3$ , the mass of this sample of water is
$m=dV=(1000 kg/m^3)(0.035 m^3)=35 kg$

The water specific heat capacity is $C_s = 4.18 kJ/kg ^{\circ}C$

and the increase in temperature is $\Delta T=83.7 ^{\circ}C-22.7 ^{\circ}C=61^{\circ}C$

Therefore, the amount of energy needed is
$Q=mC_s \Delta T=(35 kg)(4.18 kJ/kg ^{\circ}C)(61^{\circ}C)=8924 kJ = 8.92 \cdot 10^6 J$

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4 years ago