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3 years ago

You are in the forest with some of your friends. You’re being chased by a very angry and hungry bear.

Physics

1 answer:

melomori [17]3 years ago

8 0

Answer:

2m head start or else you done for

Explanation:

you cant even out run a bear they run at 35mph the fastest human is 25

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A ball having mass 2 kg is fastened at the end of a flagpole that is connected to the side of a tall building at point P . The l

victus00 [196]

Answer:

1217.6 kg m^{2} / s

Explanation:

mass (m) = 2 kg

length (L) = 4.6 m

angle = 1.0472 rad = 60 degrees

acceleration due to gravity (g) = 9.8 m/s^{2}

time (t) = 27 s

angular momentum = m x g x L x t x cosθ

angular momentum = 2 x 9.8 x 4.6 x 27 x cos 60 = 1217.6 kg m^{2} / s

7 0

3 years ago

A student finds a resistor in an old transistor radio. When the resistor is attached to a 1.5 V cell, the flow of current is mea

valkas [14]

Answer:

yes

Explanation:

because no matter what voltage you connect it up to, the current always increases proportionally to the voltage.

this is because it follows ohm's law V = I X R.

(voltage = current X resistance)

so to calculate the resistance, change the formula to R = V / I giving you 60 ohm (resistor value)

the value of the resistor is always 60 ohm's, no matter which combination of voltage and current you used and measured, so it follows ohm's law, therefore being an ohmic resistor

3 0

3 years ago

Calculate the work WC done by the gas during the isothermal expansion. Express WC in terms of p0, V0, and Rv.

mote1985 [20]

Complete Question

The complete question is shown on the first and second uploaded image

Answer:

The expression is $W_c = P_o V_o ln (R_v)$

Explanation:

Generally smallest workdone done by a gas is mathematically represented as

$dW = PdV$

Generally for an isothermal process

$PV = nRT = constant$

=> $P = \frac{nRT}{V}$

Generally the total workdone is mathematically represented as

$W_c = \int\limits^{v_f}_{V_o} {\frac{nRT}{V} } \, dV$

=> $W_c = nRT \int\limits^{V_f}_{V_o} {\frac{1}{V} } \, dV$

=> $nRT [lnV] | \left \ {V_f}} \atop {V_o}} \right.$

=> $W_c = nRT [ln(V_f) - ln(V_o)]$

=> $W_c = nRT ln \frac{V_f}{V_o}$

From the question $\frac{V_f}{V_o } = R_v$

=> $W_c = P Vln (R_v)$

at initial state

$W_c = P_o V_o ln (R_v)$

7 0

3 years ago

What color will a yellow banana appear when illuminated by yellow light

Phantasy [73]

Answer:

A yellow banana reflects only yellow light,

Explanation:

3 0

3 years ago

It is measured that 3/4 of a body's volume is submerged in oil of density 800kg/m³

Evgesh-ka [11]

Complete question:

It is measured that 3/4 of a body's volume is submerged in oil of density 800kg/m³. What is the specific gravity of oil?

Answer:

The specific gravity of the oil is 0.8.

Explanation:

Given;

density of the oil, $\rho_o$ = 800 kg/m³

density of water, $\rho_w$ = 1000 kg/m³

The specific gravity of any substance is the ratio of the substance density to the density of water.

Specific gravity of the oil = density of the oil / density of water

Specific gravity of the oil = 800/1000

Specific gravity of the oil = 0.8

Therefore, the specific gravity of the oil is 0.8.

8 0

3 years ago