A wall clock strikes the bell once 1 o'clock, 2 times at 2 o'clock, 3 times of 3 o'clock and so on. How many times will it strike in a particular day? Find the standard deviation of the number of strike the bell makes a day.

Q: 4.4. The Sears Tower in Chicago is 1454 ft high. (a) How long would it take an object dropped from…

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Q: A room has a width of 13.3 feet, a length of 14.3 feet, and a ceiling height of 13.2 ft.  The…

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Q: A venturimeter as shown in the figure (not to scale) is connected to measure the flow of water in a…

A: Given: A venturi meter as shown in figure, Acc due to gravity, g = 9.8 m/s2 The deflection in the…

Q: If the barometer is installed in direct sunlight causing the water temperature to rise to 50°C, what…

A: Given,  Barometer installed on sunlight

Q: Hi! The previous tutor answered this question already. I am just confused about the number of days…

A: Tutors answer is absolutely correct. As there are 12 months in a year and out of which 7 months have…

Q: The speed of the tip of the minute hand on a town clock is 1.75  103 m/s. (a) What is the speed…

A: Speed of tip of minute hand=1.75mm/sec

Q: 25. Four of the light bulbs in a box of ten bulbs are burnt out or otherwise defective. If two bulbs…

A: Total no. of bulb = 10 Defective bulbs = 4 2 bulbs are chosen randomly.

Q: Compute the deflection of a structural member made of aluminum if a load of 755 N is applied to the…

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Q: Blood pressure is commonly measured with a cuff placed around the arm, with the cuff pressure (which…

A: Given data  Mercury manometer Height of mercury column To be discussed  Wht cant we use water in…

Q: Q1b For the pin-jointed frame in Figure Q1b, (i) State whether the frame is in statistically stable…

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Q: A tank can be filled by three pipes separately in 20, 30, and 60 minutes respectively. IN how many…

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Q: The percentage profit earned by selling an article for 1920 is equal in the percentage loss curred…

A: Note- Hi! Thank you for the question As per the honor code, We’ll answer the first question since…

Q: A noise meter located at a distance of 30 m from a point source recorded 74 dB. The reading at a…

A: Given data: Distance of 1st noise meter, R1=30 m Distance of 2nd noise meter, R2=60 m Sound recorded…

Q: Besides energy savings, what are other advantages that observation of daylight saving time may…

A: The answer is below:

Q: In an experiment on a venturi meter installed in a 300 mm diameter pipe, the mercury in the…

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Q: I think Y evc has a wrong solution it doesn't  show 200.18 when ay input it on calculator

A: Given,   G1 = -4%   G2 = 2%    L = 481.67 m

Q: A reinforced concrete beam section is "b" wide and "h" deep. It is to be reinforced with 10 mmø…

A: I had answered only first two steps. Because given time limit I can solve only two steps.

Q: A man standing at a window 6 meters tall watches a falling stone pass by the window in 0.37 secs.…

A: Given height = s =6m Time = t = 0.37 sec        Intital velocity = u  Final velocity = v  Height = h

Q: 100-kg block initially at rest is acted upon by a constant force of 80 N for 5 seconds after which…

A: Using impulse momentum theorem

Q: A family transplanted a tree in their yard 100 years ago. When it was planted, the tree was 5ft…

A: The values and diagram given in the question are as follows: Height of tree when it was planted(h)=5…

Q: what will be the reading of mercury barometer in centimeters if the atmospheric pressure is…

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Q: An anemometer measures the velocity of the air from a grill. The anemometerreading is 18 ft/m. What…

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Q: Jomar who is five and a half feet tall wants to measure the length of his shadow at a certain time…

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Q: ACTIVITY 2 Direction: solve and analyze each of the following problem in neat and orderly manner. Do…

A: Given room temperature = Tm = 700C  At t= 0min : T0 = 18⁰C  At t=1 min : T1 = 31⁰C

Q: Find the probability that a person flipping a coin gets the third head on the 5th flip.

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Q: Calculate the values of AWD and ADT for summer and winter seasons only. Month 1 2 S4 5 6 7 Weekdays…

A: Given, Traffic data stats    To find : Average Weekday traffic (AWD) and average daily traffic (ADT)…

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Q: A weather reports indicates the barometers pressure is 28.54 inches of mercury. What is the…

A: Given data  Barometric reading  To find  Atmospheric pressure in pounds per inch

Hydrogen Energy

Energy is a quantity that cannot be defined, its existence can only be felt. In simple language, if a system possesses energy, it can do a specific kind of work. There are many forms of energy sources which people can use to obtain work. Solar energy, tidal energy, hydroelectric energy, geothermal energy, wind energy are some of the renewable energy sources which are primarily used for the production of electricity.