Answer:
Tension= 4,373.70N
Explanation:
Ma= Sum of forces
Horizontal forces are:
0= T1costheta=T2costheta
T1=T2=T
Vertical forces are:
Ma= T1sin8°+ T2sin8° - mg
Ma= 2Tsin8° - mg
Therefore ,
T= m(a+g)/(2sin8°)
T= 68(8.10+9.8)/2×0.139
68(17.9)/0.2783
T= 4373.697
T= 4373.70N
Answer:
v = -10⁵ m/s
Explanation:
given,
speed of asteroid,v' = 100 m/s
mass of superman = m
mass of asteroid,M = 1000 m
recoil velocity of superman,v= ?
using conservation of momentum.
m u + M u' = m v + M v'
initial velocity of asteroid and superman is equal to zero
0 + 0 = m v + 1000 m x 100
m v = -100000 m
v = -10⁵ m/s
superman's velocity after throwing the asteroid is equal to v = -10⁵ m/s
Sometimes called energy transformation, energy of fossil fuels, solar radiation, or nuclear fuels can be converted into other energy forms such as electrical, propulsive, or heating that are more useful to us. For example, a light bulb converts electrical energy into heat and light energy.
Answer:
It's a pretty simple suvat linear projectile motion question, using the following equation and plugging in your values it's a pretty trivial calculation.
V^2=U^2+2*a*x
V=0 (as it is at max height)
U=30ms^-1 (initial speed)
a=-g /-9.8ms^-2 (as it is moving against gravity)
x is the variable you want to calculate (height)
0=30^2+2*(-9.8)*x
x=-30^2/2*-9.8
x=45.92m
Answer:
Voltage, V = 0.0741 volts
Explanation:
It is given that,
Width of membrane,
Electric field strength,
We need to find the voltage across membrane. Electric field is given by :
V = 0.0741 V
So, the voltage across the membrane is 0.0741 volts. Hence, this is the required solution.