Answer:D) The kinetic energy decreases and the gravitational potential energy increases
Answer: El trabajo realizado al desplazar el bloque es: 75 N.m
Datos:
Fuerza= F= 25 N
Distancia= d= 3 m
Explicación:
El trabajo es el producto de la fuerza ejercida sobre un cuerpo con el desplazamiento producido por la fuerza. Para que exista trabajo, la dirección de la fuerza debe ser igual a la dirección del desplazamiento.
Trabajo= Fuerza x Desplazamiento
Reemplazando los datos:
T= 25 N * 3 m
T= 75 N.m
Answer:
is that a question or a statement lol
Explanation:
Answer:
B = 4.41 10⁻⁴ T
The direction of the magnetic field is perpendicular to the speed in such a way that if the force is in the clokwise direction
Explanation:
For this problem let's use Newton's second law where the force is magnetic
F = ma
the magnetic force is
F = q v x B
The bold are vectors, as they indicate that the magnetic field and velocity are perpendicular the magnitude of the force is
F = q v B
acceleration is centripetal
a = v² / r
we substitute
q v B = m v² / r
B = m v / q r
Since the velocity modulus is constant, we can use the relation of uniform motion with the time of a lap that we call period (T)
v = d / t
the length of the circle is
d = 2π r
v = 2π r / T
we substitute in the magnetic field equation
B = m /qr (2π r / T)
B = m/q 2π / T
we calculate
B = 2 9.1 10⁻³¹ / 2 1.6 10⁻¹⁹ 2π / 81 10⁻⁹
B = 4.41 10⁻⁴ T
The direction of the magnetic field is perpendicular to the speed in such a way that if the force is in the clokwise direction, for example if the speed goes on the positive axis the field goes up
Answer:
<h2>An unbalanced force acting on an object causes it to accelerate. There are two points to note about the acceleration of an object when an unbalanced force acts on it. The bigger the unbalanced force acting on the object the bigger the acceleration of the object.</h2>
Explanation: