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mojhsa [17]
3 years ago
5

The force of gravity acts on all apples on an apple tree. Some apples are twice as far from the ground as others. For the same m

ass these twice-as-high apples have _________.a) 1/4 weightb) 1/2 weightc) paractically the same weight
Physics
1 answer:
EleoNora [17]3 years ago
4 0

Answer:

c) paractically the same weight

Explanation:

The force of gravity acts on all apples on an apple tree. Some apples are twice as far from the ground as others. For the same mass these twice-as-high apples have _________.a) 1/4 weightb) 1/2 weightc) paractically the same weigh

from newton's law of motion

states that

the rate of  change in momentum of  a body is directly proportional to the force applied on the body

f\alpha=mdv/dt

dv/dt=a

f=kma

f=ma, where k is constant and equal to 1

a=g since the body is falling under gravity

acceleration of the apples become acceleration due to gravity

W=mg

since they all have equal mass, then the weight on the body will be practically and obviously  the same

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Charge A is sitting in an electric field you know the following information:________
soldi70 [24.7K]

Answer:

The equation that will relate all the given parameters, in other to calculate the potential energy of charge A is:

∆V = ∆U/q, ∆V is potential at charge A position, q is magnitude of charge A, ∆U will be made the subject of the relation, which is the Potential Energy of charge A. The notation "∆" show, the quantities have both in values and final values, in the electric field.(Change in Electric potential and potential energy, due to the effect of the field)

Explanation:

The potential energy of a charged particle (Charge A) in an electric field depends on the magnitude of the charge(Known as stated in the question). However, the potential energy per unit charge has a unique value at any point in the electric field.

6 0
3 years ago
Compared to the thickness and density of the continental crust of South America, the oceanic crust of the Pacific floor is______
chubhunter [2.5K]

Answer:

The pacific floor (oceanic crust) is thinner and more denser

Explanation:

The continental crust have a thickness of about 35 to 40 km on an average, and are composed of rocks that has less denser granitic minerals such as feldspar, quartz.

On the other hand, the oceanic crust have a thickness of about 7 to 10 km on an average, and it is comprised of denser mafic rocks that contains high amount of olivine and pyroxene minerals.

Due to this, the oceanic crust subducts below the continental crust during the time of collision.

Thus, the pacific floor (oceanic crust) is thinner and more denser, in comparison to the South American continental crust.

3 0
3 years ago
Which of the following correctly describes magnetic poles.
Mademuasel [1]

Answer:

The magnetic poles are the places on the earth's surface where the magnetic field force is acting perpendicularly to the surface. The North magnetic pole is where the field is acting straight down; at the South magnetic pole, it is acting straight up.

Explanation:

3 0
3 years ago
2. A car that starts from rest can travel a distance of 50 m in a time of 6.0 s.
Helen [10]
Answer is B hope this helps
8 0
1 year ago
A solid steel column is 4.0 m long and 0.20 m in diameter. Young's modulus for this steel is 2.0 × 1011 N/m2. By what distance d
zzz [600]

Answer:

3.12 x 10^-5 m

Explanation:

Length of steel column, L = 4 m

diameter, d = 0.2 m

radius = half of diameter = 0.1 m

Young's modulus, Y = 2 x 10^11 N/m^2

Mass of truck, m = 5000 kg

Force, F = mass of truck x acceleration due to gravity

F = 5000 x 9.8 = 49000 N

Area of crossection of cable,

A =  \pi r^{2}=3.14\times\0.1\times0.1=0.0314m^{2}

Let ΔL be the shrink in length of cable, then by the formula of Young's modulus

Y=\frac{F\times L}{A\times\Delta L}

\Delta L = \frac{F\times L}{A\times Y}

\Delta L = \frac{49000\times 4}{0.0314\times 2\times10^{11}}

ΔL = 3.12 x 10^-5 m

Thus, the shrink in the length of cable is 3.12 x 10^-5 m.

8 0
3 years ago
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