All categories

2 years ago

En una balanza de fábrica se determina la masa de un cuerpo y se obtiene

1 answer:

6 0

Kylie Kristen Jenner (born August 10, 1997)[3] is an American media personality, socialite, model, and businesswoman. She has starred in the E! reality television series Keeping Up with the Kardashians since 2007 and is the founder and owner of cosmetic company Kylie Cosmetics.

You might be interested in

Explain how gravity and friction work to slow down a kicked soccer ball.

goblinko [34]

Use your feet to stop it since it is soccer you can't use your hands!!!! P.S. you can't use gravity.

5 0

2 years ago

Suppose that a solid ball, a solid disk, and a hoop all have the same mass and the same radius. Each object is set rolling witho

8090 [49]

Answer:

Hoop will reach the maximum height

Explanation:

let the mass and radius of solid ball, solid disk and hoop be m and r (all have same radius and mass)

They all are rolled with similar initial speed v

by the law of conservation of energy we can write

$K_{trans}+K_{rot}= P$

for solid ball

$[tex]\frac{1}{2}mv^2+\frac{1}{2}I_{ball}\omega^2= mgh_{ball}$

putting $I_{ball}=\frac{2}{5}mr^2 and \omega=\frac{v}{r}$ in the above equation and solving we get

$h_{ball}= 0.071v^2$

now for solid disk

$[tex]\frac{1}{2}mv^2+\frac{1}{2}I_{disk}\omega^2= mgh_{disk}$

putting $I_{ball}=\frac{1}{2}mr^2 and \omega=\frac{v}{r}$ in the above equation and solving we get

$h_{disk}= 0.076v^2$

for hoop

$[tex]\frac{1}{2}mv^2+\frac{1}{2}I_{hoop}\omega^2= mgh_{hoop}$

putting $I_{hoop}=mr^2 and \omega=\frac{v}{r}$ in the above equation and solving we get

$h_{hook}= 0.10v^2$

clearly from the above calculation we can say that the Hoop will reach the maximum height

5 0

3 years ago

What is the force weight of a jaguar who jumps 3 meters to a tree branch with 2670 J of work?

fgiga [73]

Answer:

$we \: know \: energy \: = \: force \: \times distance \\ e = f \times d \\ so \: f \: = \frac{e}{d} \\ so \: th \: force \: here \: = (\frac{2670}{3}) newton \\ = 890newton$

Hope it helps

7 0

3 years ago

A force is a vector that has both ______ and direction.

My name is Ann [436]

A force is a vector that has both magnitude and direction.

Explanation:

A force is defined as the amount of pull or push experienced by a body. The force acting on a body can bring about the change in the state of rest or motion of a body.

The physical quantities are broadly divided into two categories.

Scalar Quantities
Vector Quantities

The scalar quantities are the quantities that have only magnitude and do not require any direction for their representation whereas the vector quantities on the other hand are the quantities that require the magnitude as well as the direction for their representation.

The speed of a body is considered to be a scalar quantity whereas the velocity of the body considered as the vector because the velocity requires the direction along with the magnitude.

Similarly, the distance of a body is the length of a path covered by the body from the initial point. So, it is scalar but the displacement is the shortest distance between the initial and final point. SO, it is termed as vector as it has direction.

Similarly, the force acting on a body requires the magnitude as well the direction for the complete expression of the force.

Thus, A force is a vector that has both magnitude and direction.

Learn More:

1. The term that identifies scalar quantity brainly.com/question/498779

2. Which one is not a component of a lever brainly.com/question/1073452

3. The amount of kinetic energy of an object depends on brainly.com/question/137098

Answer Details:

Grade: High School

Subject: Physics

Chapter: Scalars and Vectors

Keywords:

force, pull, push, experienced, vector, scalar, magnitude, direction, body, speed, velocity, distance, displacement, representation, quantity.

8 0

3 years ago

A proton accelerates from rest in a uniform electric field of 664 N/C. At some later time, its speed is 1.46 106 m/s. (a) Find t

Katarina [22]

Answer:

Explanation:

In an electric field E force on charge q

F = Eq , acceleration a = Eq / m

a = 664 x 1.6 x 10⁻¹⁹ / 1.67 x 10⁻²⁷

= 636.16 x 10⁸ m /s²

b )

initial velocity u = 0

final velocity v = 1.46 x 10⁶ m/s

v = u + at

1.46 x 10⁶ = 0 + 636.16 x 10⁸ x t

t = 2.29 x 10⁻⁵ s

c )

s = ut + 1/2 a t²

= 0 + .5 x 636.16 x 10⁸ x ( 2.29 x 10⁻⁵ )²

= 1668 x 10⁻²

= 16.68 m

d )

Kinetic energy = 1/2 m v²

= .5 x 1.67 x 10⁻²⁷ x ( 1.46 x 10⁶ )²

= 1.78 x 10⁻¹⁵ J .

6 0

3 years ago