Una caja de embalaje se coloca en una plano inclinado de 20° si el coeficiente de friccion estatica entre la caja y el plano es de 0.65 ¿ la caja se deslizara hacia abajo por el plano sise suelta desde el reposo ​

Why don't you see your reflection in water with waves or repples

Assume you measured the mass of the cart to be (500 ± 1) g and the mass of the additional mass you put on the cart to be (500 ± 1) g as well. since the scale you are using in the lab cannot measure objects heavier than 600g you will have to sum up individual pieces and propagate the error. so what would be the mass and the standard error of the cart and the mass

How many neutrons does element x if it’s atomic number is 28 and its mass number is 87