a = acceleration of the bank cart = 4 m/s²
m = mass of the bank cart = 8000 kg
F = net force on the cart
According to newton's second law , Net force is the product of mass of the object and the acceleration of the object.
Net force = mass x net acceleration
hence Net force acting on the cart is given as
F = ma
F = 8000 x 4
F = 32000 N
hence the net force acting on the cart comes out to be 32000 N
Answer:
![Desired\ effect=1312.5\ W](https://tex.z-dn.net/?f=Desired%5C%20effect%3D1312.5%5C%20W)
The net effect on the laboratory is cooling of the space.
Explanation:
Given:
power used by the air conditioner, ![P_i=750\ W](https://tex.z-dn.net/?f=P_i%3D750%5C%20W)
coefficient of performance, ![COP=1.75](https://tex.z-dn.net/?f=COP%3D1.75)
We know that:
![\rm COP=\frac{desired\ effect}{Power\ consumed}](https://tex.z-dn.net/?f=%5Crm%20COP%3D%5Cfrac%7Bdesired%5C%20effect%7D%7BPower%5C%20consumed%7D)
<u>Therefore the cooling power capacity:</u>
![\rm Desired\ effect=COP\times power\ consumend](https://tex.z-dn.net/?f=%5Crm%20Desired%5C%20effect%3DCOP%5Ctimes%20power%5C%20consumend)
![Desired\ effect=1.75\times750](https://tex.z-dn.net/?f=Desired%5C%20effect%3D1.75%5Ctimes750)
![Desired\ effect=1312.5\ W](https://tex.z-dn.net/?f=Desired%5C%20effect%3D1312.5%5C%20W)
The net effect on the laboratory is cooling of the space.
The weight of an object is given by:
![F=mg](https://tex.z-dn.net/?f=F%3Dmg)
where
F is the weight
m is the mass of the object
![g=9.81 m/s^2](https://tex.z-dn.net/?f=g%3D9.81%20m%2Fs%5E2)
is the gravitational acceleration
The piece of ham in this problem has a mass of
m=630 g = 0.63 kg
therefore its weight is
Answer:
The first frequency of audible sound in the speed sound is
f = 662 Hz
Explanation:
vs = 344 m/s
x = 52 cm * 1 / 100m = 0.52m
The wave length is the distance between the peak and peak so
d = 2x
d = 2*0.52 m
d = 1.04 m
So the frequency in the speed velocity is
f = 1 / T
f = vs / x = 344 m/s / 0.52m
f ≅ 662 Hz
Answer:
decrease
Explanation:
Rate of production of heat = 100 J/s
Rate of heat flowing out = 200 J/s
As the rate of flowing heat is more than the rate of generating heat so the temperature of body will decrease.