Answer:
Explanation:
As we know that the mass of the fleas is given as
now the speed of the fleas is given as
now just before it will jump let say it has some energy E
so as per energy conservation law we can say that this total initial energy will convert into its kinetic energy just after the jump
so the initial total energy is given as
The work done against the gravitational force goes into an important form of stored energy that we will explore in this section. ... If the object is lifted straight up at constant speed, then the force needed to lift it is equal to its weight mg. The work done on the mass is then W = Fd = mgh.
Answer:
W 1920 N
Explanation:
200kg at a location where g=9.6m/s^2
Using Ohm’s Law:
V=IR
V=(16)(9)
V = 144 volts
ANSWER:
a) 25.97 N
b) 47.53 N
STEP-BY-STEP EXPLANATION:
Given:
Beaker mass = 1.2 kg
Water mass = 2.5 kg
Water density = 1000 kg/m^3
Block mass = 3.8 kg
Block density = 3300 kg/m^3
a)
The first thing is to calculate the volume of the block, like this:
Mass of water displaced by the block is:
The block will receive a push from the water equal to the weight of the water displaced by the block, or the effective weight of the block will be reduced by the same amount:
Therefore, 25.97 N is the reading on the hanging scale.
b)
The bottom scale will gain by the same amount (1.15 kg). Therefore, the totalweight on the bottom scale is:
Therefore, 47.53 N is the reading on the lower scale.