In order to do work on an object, the force you exert must be

Physics

1 answer:

Vedmedyk [2.9K]3 years ago

4 0

The force must be made over a distance

You might be interested in

Using the Bohr model, what is the ratio of the energy of the nth orbit of a triply ionized beryllium atom (Be3+, Z = 4) to the e

emmainna [20.7K]

Answer:

Explanation:

solution:

by taking the ratio of the energy E_n,be of the nth orbit of a beryllium atom

Z_be=4 to the energy E_n,h of the nth orbit of a hydrogen (Z_h=1) atom gives

E_n,B/E_n,H=-(2.18*10^-18)*Z^2_BE/-(2.18*10^-18)*Zh^2/n^2

=Z^2_BE+/Z^2_H

=(4)^2/(1)^2

= 16

8 0

4 years ago

7 Calculate the weight of an apple of mass 100 grams

Leni [432]

Answer:

See the anwers below

Explanation:

To solve this problem we must understand that the weight of any $W = 0.1*10\\W = 1 [N]$ body is defined as the product of mass by gravitational acceleration. Gravitational acceleration depends on the place in space where a certain body is located.

$W = m*g\\$

where:

W = weight [N]

m = mass = 100 [g] = 0.1 [kg]

g = gravity acceleration [m/s²] or [N/kg]

Now for the Earth

$W =m*g\\W =0.1*10\\W = 1[N]$

For the Moon

$W = m*g\\W =0.1*1.6\\W = 0.16 [N]$

4 0

3 years ago

A hockey puck slides off the edge of a horizontal platform with an initial velocity of 28.0 m/shorizontally in a city where the

kozerog [31]

Answer:

θ = 12.60°

Explanation:

In order to calculate the angle below the horizontal for the velocity of the hockey puck, you need to calculate both x and y component of the velocity of the puck, and also you need to use the following formula:

$\theta=tan^{-1}(\frac{v_y}{v_x})$ (1)