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3 years ago

Suppose that a pendulum has a period of

Physics

1 answer:

Yakvenalex [24]3 years ago

4 0

Explanation:

period of pendulum = time taken for 1 oscillation = time taken for 1 complete back and forth vibration

q1 ans is given in question its 1.5 sec

q2 ans is 1.5 sec longer than 1 sec period

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How can energy be converted from one form to another?

Ket [755]

By heat or change in matter,
there can be different reactions that create heat (like exothermic or endothermic reactions)
or movement can give off energy too,
energy is basically just heat

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3 years ago

Which wave has a wavelengh that is most likely seen as red light?

goblinko [34]

Answer:

Explanation:

Red light has wavelengths around 620 to 750 nm.

7 0

3 years ago

Read 2 more answers

A 0.80 kg basketball traveling upward at 5.0 m/s impacts an 8.0 10 kg tennis ball traveling downward at 5.0 m/s. The basketball’

vlabodo [156]

To solve this problem we will apply the concepts related to the conservation of momentum. This can be defined as the product between the mass and the velocity of each object, and by conservation it will be understood that the amount of the initial momentum is equal to the amount of the final momentum. By the law of conservation of momentum,

$m_1u_1+m_2u_2 = m_1v_1+m_2v_2$

Here,

$m_1$ = Mass of Basketball

$m_2$ = Mass of Tennis ball

$u_1$ = Initial velocity of Basketball

$u_2$ = Initial Velocity of Tennis ball

$v_1$ = Final velocity of Basketball

$v_2$ = Final velocity of the tennis ball

Replacing,

$(0.8)(0.5)+(0.1)(-5.0)=(0.8)(0.3)+(0.1)v_2$

Solving for the final velocity of the tennis ball

$v_2 = 11m/s^2$

Therefore the velocity of the tennis ball after collision is 11 m/s

3 0

3 years ago

Read 2 more answers

A vessel with an unknown volume is filled with 10 kg of water at 90oC. Inspection of the vessel at equilibrium shows that 8 kg o

damaskus [11]

Hey there!

In this case, it is possible to solve this problem by using the widely-known steam tables which show that at 90 °C, the pressure that produces a vapor-liquid mixture at equilibrium is about 70.183 kPa (Cengel, Thermodynamics 5th edition).

Moreover, for the calculation of the volume, it is necessary to calculate the volume of the vapor-liquid mixture, given the quality (x) it has:

$x=\frac{m_{steam}}{m_{total}}$

Thus, since 8 kg correspond to liquid water, 2 kg must correspond to steam, so that the quality turns out:

$x=\frac{2kg}{10kg} =0.20$

Now, at this temperature and pressure, the volume of a saturated vapor is 2.3593 m³/kg whereas that of the saturated liquid is 0.001036 m³/kg and therefore, the volume of the mixture is:

$v=0.001036m^3/kg+0.2(2.3593-0.001036 )m^3/kg=0.4727m^3/kg$