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docker41
3 months ago
8

A box sliding on a horizontal frictionless surface runs into a fixed spring, compressing it a distance x1 from its relaxed posit

ion while momentarily coming to rest.
1)If the initial speed of the box were doubled, how far x2 would the spring compress?

x2 = ?2 x1
x2 = 2 x1
x2 = 4 x1
Physics
1 answer:
serg [3.5K]3 months ago
7 0

Answer:

x₂=2×1

Explanation:

According to the work-energy theorem, we can assume that the gravitational potential energy at the lowest point of compression is zero since the kinetic energy change is 0;

mgx-(kx)²/2 =0 where m refers to the object's mass, g indicates the acceleration due to gravity, k denotes spring constant, and x represents the spring's compression.

mgx=(kx)²/2

x=2mg/k----------------compression when the object is at rest

However, ΔK.E =-1/2mv²⇒kx²=mv² -----------where v symbolizes the object's velocity and K.E signifies kinetic energy

Thus, if kx²=mv² then

v=x *√(k/m) ----------------where v=0

<pDoubling v results in multiplying x *√(k/m) by 2, leading to x₂ being double x₁

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briefly discuss the phenomenon of childhood maltreatment in the context of five different psychological perspectives
kicyunya [3294]

Answer:

Child maltreatment encompasses various forms of abuse, including sexual, physical, and psychological harm inflicted upon minors.

There are five distinct psychological viewpoints regarding childhood maltreatment:

  • One major contributor to childhood maltreatment is poverty, which adversely affects children's mental well-being.
  • Parents may fail to provide adequate care for their children.
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2 months ago
Through how many volts of potential difference must an electron, initially at rest, be accelerated to achieve a wave length of 0
kicyunya [3294]
20.7 volts. The mass of an electron is 9.1 x 10⁻³¹ kg, and its wavelength is 0.27 x 10⁻⁹ m. The velocity of the electron can be determined using de Broglie's equation λ mv = h. Substituting the known values, we arrive at v = 2.7 x 10⁶ m/s. The potential difference through which the electron accelerates is noted, with the charge on an electron being 1.6 x 10⁻¹⁹ C. According to the conservation of energy, (0.5) mv² = q ΔV leads to ΔV = 20.7 volts.
4 0
2 months ago
A wire has an electric field of 6.2 V/m and carries a current density of 2.4 x 108 A/m2. What is its resistivity
Softa [3030]

Response:

The resistivity can be expressed as \rho = 2.5 *10^{-8} \ \Omega \cdot m

Clarification:

According to the information provided,

    The value of the electric field measures  E = 6.2 V/m

     The density of current is given as  J = 2.4 *10^{8} \ A/m^2

Typically, resistivity is represented in mathematical terms as

         \rho = \frac{E}{J}

by inserting values

        \rho = \frac{6.2}{2.4 *10^{8}}

        \rho = 2.5 *10^{-8} \ \Omega \cdot m

5 0
1 month ago
Determine whether each substance will sink or float in corn syrup, which has a density of 1.36 g/cm3. Write “sink” or “float” in
Sav [3153]

Explanation:

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Density of corn syrup = 1.36 g/cm^3

1) Density of gasoline = 0.748 g/cm^3

Gasoline's density is less than that of corn syrup, indicating it will float in corn syrup.

2) Density of water = 1 g/cm^3

Water's density is also less than that of corn syrup, meaning it will float in corn syrup.

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Honey's density exceeds that of corn syrup, so it will sink in corn syrup.

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The density of titanium is greater than that of corn syrup, hence it will sink in corn syrup.

3 0
2 months ago
Read 2 more answers
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